---
product_id: 47730465
title: "EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment"
brand: "efficere"
price: "S$87"
currency: SGD
in_stock: true
reviews_count: 10
category: "Efficere"
url: https://www.desertcart.sg/products/47730465-efficere-8-piece-premium-1-2-reduced-shank-silver-deming
store_origin: SG
region: Singapore
---

# 135° split point for fast drilling M2 Cobalt HSS for durability Dual titanium & nitride coating EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment

**Brand:** efficere
**Price:** S$87
**Availability:** ✅ In Stock

## Summary

> 🔧 Drill Like a Pro, Finish Like a Boss!

## Quick Answers

- **What is this?** EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment by efficere
- **How much does it cost?** S$87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/47730465-efficere-8-piece-premium-1-2-reduced-shank-silver-deming)

## Best For

- efficere enthusiasts

## Why This Product

- Trusted efficere brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Organized Portability:** Sleek aluminum carry case keeps your full range of large-diameter bits (9/16” to 1”) neatly stored and ready for any project.
- • **Chip-Clearing Efficiency:** Deep spiral grooves rapidly eject debris, keeping your drill cool and your workflow uninterrupted.
- • **Precision Speed Drilling:** 135° split point tip ensures self-centering, faster cuts, and zero wobble—get the job done right, right away.
- • **Industrial-Grade Strength:** Crafted from premium M2 cobalt high speed steel for unmatched durability across wood, metal, and plastics.
- • **Universal Fit & Secure Grip:** 1/2” reduced shank with tri-flat design locks firmly into all major drill presses and power tools—no slippage, no hassle.

## Overview

The EFFICERE 8-Piece Premium Drill Bit Set features industrial-grade M2 cobalt high speed steel construction with a 135° split point for fast, precise drilling. Its dual gold titanium and black nitride coating boosts durability and corrosion resistance by 80%, while the 1/2” reduced shank with tri-flat end ensures secure compatibility with most power tools. This set covers large diameters from 9/16” to 1” in 1/16” increments, all housed in a durable aluminum case for professional-grade performance and convenience.

## Description

EFFICERE 8-Piece Silver and Deming Drill Bit Set is your perfect choice for drilling large holes over half inch diameter on wood, plastic, aluminum, copper, cast iron, mild steel, stainless steel, sheet metals and many other types of materials. It serves a wide range of applications such as woodworking, auto repairs, equipment and machinery, metal fabrication and a lot more. Constructed from premium cobalt high speed steel for dependable strength, these drills bits are built to last. Featuring 135-degree split point at tip, they start cutting with self centering for faster speed and prevent walking during drilling. A superior golden titanium and black nitride dual coating finish is applied to each drill that holds up lubricant better for smoother drilling and is 80% more durable and corrosion resistant than regular black enamel finish. All the tools have a universal 1/2 inch reduced shank with tri-flat end that securely locks onto the 3-jaw chuck from all brands of drill press and power tools. Product Key Features: ▲ Premium M2 Cobalt High Speed Steel (HSS) Construction for Maximum Strength and Durability. ▲ 135° Split Point for Faster and More Efficient Drilling without Walking. ▲ Twist Blade with Deep Groove Design Quickly Clears Out Chips and Particles. ▲ 1/2-Inch Reduced Shank Fits All Drill Press and Most Power Tools. ▲ Unique Tri-Flatted Shank End Locks Securely onto 3-Jaw Chuck. ▲ Comes with a Handy Aluminum Case for Easy Organizing and Storage in Toolbox and Tool Chest. Size Included: ▲ 9/16 Inch, 5/8 Inch, 11/16 Inch, 3/4 Inch, 13/16 Inch, 7/8 Inch, 15/16 Inch, 1 Inch

Review: Excellent Twist Drill Bits. - When I received the bits I was impressed by the quality. The case was a nice touch. I was looking for inexpensive bits in this general size range. I am working on a car that is really a resto-mod 1965 El Camino. I am fabricating a four link rear setup using factory mounting points. I didn't buy ready made trailing arms, but designed these to be fitted with larger grade 8 bolts. I hoped that the drill bits would last for the drilling operations for this project. I drilled several holes in various steel plates for tapping threads. I am impressed at the ease with which these bits cut through, leaving well finished surfaces to tap. After several uses, these bits seem to work like new and will not need replacing, or sharpening any time soon. I nearly spent three or four times more for "name brand" bits, but I am really glad that I didn't. I don't drill holes for a living or have to meet deadlines, so for me these seem like top drawer stuff! I appreciate the card that I found in this set of bits, seems like this is a company who is intending to make a splash in the metal working industry! Thank you so much for engineering quality into your tools!
Review: Great bits! Use water-based cutting fluid with these large drill bits an you'll do just fine. - Great set of bits. Needed reduced shank - large diameter bits - to use with my 1/2" hand drill. The bits I have used so far have cut well though 7/16" steel just fine. Take your time and use water based cutting fluid as you should with any drill bits of this size. Larger bits like this undergo lots of stress drilling large holes, especially through thicker material/metals. Use water based cutting fluid/lubrication, take your time, and the drill bits will serve you well. Great price and value!

## Features

- ▲ PREMIUM QUALITY - Industrial grade M2 cobalt high speed steel construction for proven capability and durability to drill holes in wood, plastic, aluminum, copper, cast iron, mild steel, stainless steel, sheet metal and more
- ▲ FAST AND EFFICIENT - The 135° split point design at tip increases cutting and drilling speed through self-centering and prevents drills from walking or wobbling; The twisted blade with deep groove design clears out chips and particles faster than other drill bits
- ▲ SUPERIOR COATING - Best gold titanium and black nitride dual coating finish holds up lubricant more firmly for a smoother drilling process, and is also 80% more durable and corrosion resistant than regular black enamel finish to withstand heavy duty applications
- ▲ COMPATIBILITY AND FIT SECURELY - The 1/2 Inch reduced shank is compatible with all drill presses and most power tools in the market, and the unique Tri-flatted shank end locks onto a 3-jaw chuck more tightly and securely to eliminate slippage during operation
- ▲ NO SKIPPED LARGE SIZES - Set includes a full range of 8 pieces large-diameter silver and deming drill bits in a heavy duty aluminum storage case for easy carrying and organizing. Sizes: 9/16”, 5/8”, 11/16”, 3/4”, 13/16”, 7/8”, 15/16”, 1”

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B074GYFPL4 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #14,152 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Jobber Drill Bits |
| Blade Length | 6 Inches |
| Brand | EFFICERE |
| Color | Gold and Black |
| Customer Reviews | 4.3 4.3 out of 5 stars (3,136) |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 9/16”, 5/8”, 11/16”, 3/4”, 13/16”, 7/8”, 15/16”, 1” Inches |
| Date First Available | August 1, 2017 |
| Finish | Gold Titanium and Black Nitride Dual Coating |
| Finish Type | Gold Titanium and Black Nitride Dual Coating |
| Head Style | Tri-Point |
| Included Components | 8-Pc. Large and Jumbo Drill Bits: 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1” |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1 pounds |
| Item model number | DL |
| Manufacturer | UPHILL MERCHANDISE LLC |
| Material | Metal |
| Measurement System | Inch |
| Number of Flutes | 8 |
| Number of Pieces | 8 |
| Package Dimensions | 10.04 x 8.32 x 1.93 inches |
| Part Number | DL-001 |
| Point Style | Split Point |
| Set Name | 8-Piece Set in Aluminum Case |
| Shank Type | 3-Flat |
| Size | 8-Piece Set in Aluminum Case |
| Special Features | Laser Etched Marking |
| Surface Recommendation | Aluminum, Copper, Metal, Plastic, Stainless Steel, Wood |
| Tool Flute Type | Spiral |
| UPC | 858574007136 |
| Unit Count | 1.0 Count |

## Product Details

- **Cutting Angle String:** 135 Degrees
- **Cutting Diameter:** 9/16”, 5/8”, 11/16”, 3/4”, 13/16”, 7/8”, 15/16”, 1” Inches
- **Finish Type:** Gold Titanium and Black Nitride Dual Coating
- **Material:** Metal
- **Shank Type:** 3-Flat

## Images

![EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment - Image 1](https://m.media-amazon.com/images/I/81FkjFLj3CL.jpg)
![EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment - Image 2](https://m.media-amazon.com/images/I/815gieVhegL.jpg)
![EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment - Image 3](https://m.media-amazon.com/images/I/81kUq8LZEFL.jpg)
![EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment - Image 4](https://m.media-amazon.com/images/I/71pIC1SDc0L.jpg)
![EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment - Image 5](https://m.media-amazon.com/images/I/611-akDLe3L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Will these drill hard stainless steel?**
A: Probably not.  The bit set I received did not drill aluminum, until I honed the cutting edge with a very fine grit diamond file, because the cutting edge had small burrs (incomplete final machining).  The bits are labeled HSS (high speed steel), which is ordinarily good for cutting most stainless steels, when the bit cutting edges are honed razor sharp without residual burrs.  So this inexpensive bit set is good for the machinist who can finish the honing of the cutting edges with a diamond file or a diamond drill bit sharpener.

**Q: Are these actually cobalt? if so, why don't they say hss-co or m35/m42?**
A: Keep shopping. These are the worst bits I've bought off amazon. Half of them were slightly bent (they would wobble in my drill press). The ones that were straight, were very sharp the first use. The cutting edges got dull pretty quick. I'm an auto mechanic/fabricator/machinist so I do know how to use drill bits the correct way.

**Q: Can it drill through Brick?**
A: My answer would be no. These bits are primarily for drilling metal. They will drill wood, plastic and like products but they are NOT designed for drilling masonry which would include concrete, concrete blocks, and brick.

**Q: Which bits are better? The ones in aluminum case or wood case.**
A: So for I have only used one of the bits and it did a good job. I don’t know anything about the ones it the wooden box the ones I have are in the aluminum case. I have been a machinist for 40 years but I am retired now and the bits in the aluminum case are some of the best looking ones I’ve ever seen for the price. They have flats cut on the shank so they don’t spin in the chuck and they were very sharp. I hope I have answers your question for you.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Twist Drill Bits.
*by P***W on November 10, 2020*

When I received the bits I was impressed by the quality. The case was a nice touch. I was looking for inexpensive bits in this general size range. I am working on a car that is really a resto-mod 1965 El Camino. I am fabricating a four link rear setup using factory mounting points. I didn't buy ready made trailing arms, but designed these to be fitted with larger grade 8 bolts. I hoped that the drill bits would last for the drilling operations for this project. I drilled several holes in various steel plates for tapping threads. I am impressed at the ease with which these bits cut through, leaving well finished surfaces to tap. After several uses, these bits seem to work like new and will not need replacing, or sharpening any time soon. I nearly spent three or four times more for "name brand" bits, but I am really glad that I didn't. I don't drill holes for a living or have to meet deadlines, so for me these seem like top drawer stuff! I appreciate the card that I found in this set of bits, seems like this is a company who is intending to make a splash in the metal working industry! Thank you so much for engineering quality into your tools!

### ⭐⭐⭐⭐⭐ Great bits! Use water-based cutting fluid with these large drill bits an you'll do just fine.
*by M***L on August 26, 2025*

Great set of bits. Needed reduced shank - large diameter bits - to use with my 1/2" hand drill. The bits I have used so far have cut well though 7/16" steel just fine. Take your time and use water based cutting fluid as you should with any drill bits of this size. Larger bits like this undergo lots of stress drilling large holes, especially through thicker material/metals. Use water based cutting fluid/lubrication, take your time, and the drill bits will serve you well. Great price and value!

### ⭐⭐⭐⭐ This Old Tony: "Good tooling.. for the money. Inexpensive tooling CAN serve a purpose!"
*by D***Y on August 9, 2019*

If I could go back in time.. and do it all over again.. would I buy these drill bits in the first place? Well, of course I did! As a matter of fact, I bought 2 sets of them, which was really confusing because in the future, I ended up buying 2 sets of something that I didn't "yet" know that I already had! Needless to say.. you'd be had pressed to find a better set of HSS split-point drill bits for the money.. anywhere.. except for right here at this very spot, about.. ohh.. 3 days ago, when I found myself pressing the "add to cart" button for a product that had already been shipped, and was already sitting on the bench in front of me! (Don't ask, it's part of the time traveling machinist paradox). But that's niether here, nor there.. (Dad joke) But getting right down to the quality of these bits, and why you'll want to own a set (or 3) of these for your small home shop.. let's start with why other Amazon users will tell you you shouldn't. To speak to anyone who leaves a bad review of this product, you have unrealistic, and far-too-great expectations.. and hasn't your father ever taught you that, you get what you pay for, and you can't get something for nothing? Well, what you CAN get (for NEXT TO nothing), is a nice little set of fully-formed, HSS, split-point, drill bits! These bits DO serve a purpose, that purpose just doesn't happen to be "to replace the need to buy an expensive, heirloom quality, set of precision twist drills" For the amazing low cost of this product, you can expect to get a set of reasonably accurate, factory formed and sharpened, set of twist drills that will cut reasonable well in softer metals. These bits WILL displace some chips, and will leave a reasonably formed, somewhat smooth, hole in soft metals like aluminum, brass, bronze, softer steels like free-machining steel (use cutting oil) etc. I WOULD recommend going through the set with a fine hoan, or possibly a set of progressively finer oil stones to knock down the harsh "Burr" that was left behind by the extremely high-speed production process used in the Chinese factory where these are made. Once you "go-over" the flutes and the split points and spend a little time dressing them up a bit, they are actually REALLY nice bits! ..with one caveat.. So long as you USE them in a REASONABLE manner, and don't expect them to chew precision holes through hardened tool steel with ease and purpose! They aren't made for this, nor do they promise this! These aren't the set of bits you'll find at a swap meet in 40 years, selling for $100 or more, because they aren't the type of tools that were hand ground from the finest steel, with the strictest accuracy and highest level of precision by an experienced artisan. They're inexpensive hole-makers, meant to bore holes in softer metals when you either don't care about how accurate the final hole is.. OR.. if you're like me.. they're meant to be mounted into a tailstock lathe chuck, where they will slowly core their way through chunks of aluminum, and the holes they make will almost always be "finished" by me using a boring bar/hoan, which will bring the slightly "mucky" hole made by these bits up to a precision hole with a smooth, mirror-like finish. The reason I enjoy using these bits, and why I say that they DO have a place in.. even high-end machine shops, is because they DO what it says on the tin.. after a little clean up, so long as you take your time, use a slow rotation speed, add plenty of coolant/lubricant, stop occasionally to clear your chips (peck drill), then these bits will remove a ton of material in a fairly short amount of time. If you don't think you should have to clean up each bit by hand, right out of the box.. then, I don't know WHAT you thought you were getting for the price you're paying for these bits, because I feel like I should have paid the asking price just to SHIP this much steel all the way from China, and if I were to buy a comparable quality set of bits at ANY local retail outlet, I know that I'd be looking at paying between 2x to 3x as much, and even at that price, id likely STILL have to touch them up by hand before using them, if I wanted them to cut at all and not just spin around, squealing, and making smoke.. or having one of the flutes catch a Burr on my workpiece and damn-near twist it out of the vise. So, having to do some work with the hand stone was something I FULLY expected when buying these at this price.. which is FINE with me, because i appreciate paying so much less for a simple set of HSS split point bits. At least now I won't feel bad if/when I eventually break, bend, or lose one.. or when my neighbor inevitably asks me, "hey, you mind If I borrow a 15/16" drill bit" -- This way I can hand him one of these, knowing FULL well that I'm going to have to run it up against the bench grinder when I get it back, JUST to try to get SOME sort of factory shape back into it, because as you can imagine, it's a LOT easier to just lend him something cheap, knowing he'll break it.. than it is to have to try to explain to a non-machinist why he can't use one of your "good" drill bits which cost $20-$50 EACH, for him to try to chew a hole through his trailer hitch receiver, at 1000 RPM with his cordless drill, wondering why it seems to have just "stopped cutting", as he continues to WOLLOW the tip around inside of the smoking "divit" he just created, watching the bit turn from a beautiful steel-blu, to shades of yellow, pink, purple, and ACTUAL blue. The sequel that's coming off of the tip of the borrowed bit is actually the tool itself, screaming in agony, for him to STOP.. but he won't, he will continue to push even harder, tilting his drill around in a circular motion, making sure to adequately burn off every square mm of potential cutting edge.. before he finally stops, to proclaim, "Man, this drill bit is a POS" at which point he will hopefully give up, and bring you your drill bit back, telling you "it worked great! Thanks again", and you can take you abused twist drill back over to the bench grinder and spend a little time bringing it back from the dead. But.. if he's like MY neighbor, he'll stop and say, "geeze, your drill bit was really dull, and my uncle told me one time that a dull drill bit is a dangerous one, so.. I watched a couple of YouTube videos and I sharpened it up for you!" Either way, you don't want to borrow an expensive drill bit to your neighbor, and you don't want to try to use inexpensive drill bits to bore precision holes through hardened steel. For both scenarios, you'll want to find a nice, inexpensive set of, mass produced, HSS, split point twist drills.. and THATS what youre getting when you buy a set of these. And much like anything that is INSANELY inexpensive, expect them to be a little "rough" around the edges, and expect them to need a little TLC, in the form of a little bit of hand sharpening/touch-up before you use them (small price to pay for such great savings).. And finally, expect to go a little slower, use a little lubrication, and only drill into softer metals.. and if you DO.. then you will end up loving these bit for a very long time! Thanks for watchin! -This 'not young' Tony

## Frequently Bought Together

- EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment
- Tap Magic 30004P ProTap Cutting Fluid, 4 oz. Size
- CaRoller 29Pcs Cobalt Drill Bit Set, 135 Degree Tip High Speed Steel with Black and Gold Finish, Stainless Steel, Plastic and Wood with Metal Indexed Storage Case 1/16"-1/2"

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-02*