---
product_id: 261255552
title: "CO2135 1/8 in. x 2-3/4 in. Cobalt Drill Bit"
brand: "bosch"
price: "S$33"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/261255552-co2135-1-8-in-x-2-3-4-in-cobalt
store_origin: SG
region: Singapore
---

# Surface hardened for abrasive materials Withstands up to 1100°F Thick web design for stability CO2135 1/8 in. x 2-3/4 in. Cobalt Drill Bit

**Brand:** bosch
**Price:** S$33
**Availability:** ✅ In Stock

## Summary

> 🔥 Drill Like a Pro, Last Like a Legend 🛠️

## Quick Answers

- **What is this?** CO2135 1/8 in. x 2-3/4 in. Cobalt Drill Bit by bosch
- **How much does it cost?** S$33 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/261255552-co2135-1-8-in-x-2-3-4-in-cobalt)

## Best For

- bosch enthusiasts

## Why This Product

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

## Key Features

- • **Precision Perfect:** 1/8 inch cutting diameter for detailed, clean holes every time 🎯
- • **Unmatched Stability:** Thick web design keeps your bit steady in tough conditions 🛠️
- • **Abrasive Material Slayer:** Surface hardened to conquer stainless steel, titanium, and more ⚡
- • **Heat-Resistant Powerhouse:** Drill through high-temp jobs without losing edge 🔥
- • **Versatile Industrial Grade:** Ideal for light-gauge metal, high-carbon steel, cast iron, and alloys 🔩

## Overview

The Bosch CO2135 cobalt drill bit is engineered for professionals demanding durability and precision. With a heat resistance up to 1100°F, a rigid thick web for enhanced stability, and surface hardening to penetrate tough metals like stainless steel and titanium, this 1/8 inch by 2-3/4 inch bit delivers industrial-grade performance for your most challenging projects.

## Description

CO2135 1/8 in. x 2-3/4 in. Cobalt Drill Bit

## Features

- WITHSTANDS HIGH-TEMPERATURE APPLICATIONS FOR EXTENDED PERIODS OF TIME (UP TO 1,100F)
- RIGID, THICK WEB DESIGN ADDS STABILITY TO BIT IN TOUGH APPLICATIONS
- SURFACE HARDENED TO PENETRATE TOUGH ABRASIVE MATERIALS
- AVAILABLE IN JOBBER LENGTH, FULL SHANK
- BEST USED FOR DRILLING INTO LIGHT-GAUGE METAL, HIGH-CARBON STEEL, ALUMINUM AND ALLY STEEL, CAST IRON, STAINLESS STEEL AND TITANIUM

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Bosch |
| Part number | CO2135 |
| Item Weight | 9.07 g |
| Item model number | CO2135 |
| Size | 1/8" x 2-3/4" |
| Color | Black |
| Style | Industrial |
| Finish | Titanium |
| Material | Cobalt |
| Pattern | Solid |
| Shape | Rectangular |
| Power source type | Hand_powered |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Cutting Diameter | 0.13 Inches |
| Measurement System | Inch |
| Included components | 1 Bit |
| Batteries Included? | No |
| Batteries Required? | No |
| Item diameter | 0.13 Inches |

## Product Details

- **Material:** Cobalt
- **Cutting diameter:** 0.13 Inches
- **Finish type:** Titanium
- **Shank type:** 3-Flat
- **Cutting angle string:** 118 Degrees

## Images

![CO2135 1/8 in. x 2-3/4 in. Cobalt Drill Bit - Image 1](https://m.media-amazon.com/images/I/31dnfT+X-eL.jpg)
![CO2135 1/8 in. x 2-3/4 in. Cobalt Drill Bit - Image 2](https://m.media-amazon.com/images/I/61aj-TPF9NL.jpg)

## Available Options

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

## Questions & Answers

**Q: I have to fasten 3 inch long bolts (5/16 head) into drywall/stud.  Is this drill flute long enough to create a sufficient pilot holes?**
A: Hmmm.... well, I would think if you anchored the shaft with the full 2 3/4 inch cutting screw exposed and sink it into the stud down to the chuck you might have a good pilot hole. The only thing that bothers me is that you said these are BOLTS not screws... so I don't know how much bite they will have to go that last 1/4 inch. so you may have to leave a bit of the shaft exposed to get the full 3" you will need. I hope that helps... hard to answer when I can't see what you are what you are working with.  (I am a visual learner) ;) be safe and stay well.

**Q: Is this drill bit M35 or M42 cobalt?**
A: M42 8% cobalt

**Q: Can i use this for my galaxy pro drills?**
A: They fit any drill

**Q: Would it work with a craftsman drill?**
A: Thank you for your question. The CO2135 Cobalt drill Bit has a rounded shank. If your Craftsman drill accepts round shank bit, then it will work. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from M-F 7a-7p CST.

## Frequently Bought Together

- BOSCH CO2135 1-Piece 1/8 in. x 2-3/4 in. Cobalt Metal Drill Bit for Drilling Applications in Light-Gauge Metal, High-Carbon Steel, Aluminum and Ally Steel, Cast Iron, Stainless Steel, Titanium
- BOSCH CO2133B 1-Piece 3/32 in. x 2-1/4 in. Cobalt M42 Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum

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**Shop now:** [https://www.desertcart.sg/products/261255552-co2135-1-8-in-x-2-3-4-in-cobalt](https://www.desertcart.sg/products/261255552-co2135-1-8-in-x-2-3-4-in-cobalt)

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