---
product_id: 1701728
title: "18mm Heavy-Duty Utility Knife (L-1) - Multi-Purpose Custom Cutting Depth Utility Knife w/Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade"
brand: "olfa"
price: "S$27"
currency: SGD
in_stock: true
reviews_count: 13
category: "Olfa"
url: https://www.desertcart.sg/products/1701728-18mm-heavy-duty-utility-knife-l-1-multi-purpose-custom
store_origin: SG
region: Singapore
---

# high-impact ABS handle with stainless steel channel 18mm razor-sharp snap-off blade custom ratchet lock for precise cutting depth 18mm Heavy-Duty Utility Knife (L-1) - Multi-Purpose Custom Cutting Depth Utility Knife w/Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade

**Brand:** olfa
**Price:** S$27
**Availability:** ✅ In Stock

## Summary

> 🔪 Cut like a pro, every time — don’t get left behind!

## Quick Answers

- **What is this?** 18mm Heavy-Duty Utility Knife (L-1) - Multi-Purpose Custom Cutting Depth Utility Knife w/Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade by olfa
- **How much does it cost?** S$27 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/1701728-18mm-heavy-duty-utility-knife-l-1-multi-purpose-custom)

## Best For

- olfa enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Heavy-duty ABS handle with stainless steel reinforcement for maximum leverage and safety.
- • **Unmatched Sharpness:** Japanese tool steel blade with 8 snap-off segments keeps you slicing clean and fast.
- • **Versatile Power Tool:** Cuts through drywall, roofing, flooring, rubber, and gasket materials with ease.
- • **Precision Cutting Mastery:** Custom ratchet lock lets you dial in the perfect blade length for every project.
- • **Trusted Industry Standard:** From the original Snap-Off Knife inventor, OLFA ensures durability and peak performance.

## Overview

The OLFA 18mm Heavy-Duty Utility Knife (L-1) features a razor-sharp Japanese tool steel snap-off blade with 8 segments, a custom ratchet locking system for precise cutting depth, and a rugged high-impact ABS handle reinforced with stainless steel. Designed for industrial and construction use, it delivers reliable, safe, and versatile cutting performance across multiple tough materials.

## Description

Product Description OLFA 5003 L-1 18mm Ratchet-Lock Heavy-Duty Utility Knife From the Manufacturer Original OLFA Snap-Off Heavy Duty Cutter Features A Contour Durable Handle With A Ratchet-Wheel Blade Locking Mechanism And Unlimited Blade Adjustment. Includes LB Blade.

Review: Nice quality - Blade doesn’t have any play when tightened like other knife’s, and it can be as long as you need it
Review: Compact yet effective for cutting through cardboard - Easy to hold and switch blades!

## Features

- RAZOR SHARP 18mm BLADE - Preloaded with LB Heavy-Duty Silver Snap Blade made from Japanese tool steel for unmatched sharpness and edge retention. The 18mm blade has 8 razor-sharp snap-off segments, great for industrial or construction applications.
- STURDY HANDLE - Made from high-impact ABS plastic, the handle provides extra leverage for tough cutting projects. The stainless-steel channel keeps the blade firmly in place for safe operation. There's also a keychain/lanyard hole for tethering.
- CUSTOM RATCHET LOCK CONTROL - Designed with safety in mind, our box cutter's ratchet-based locking system provides custom cutting depths. The blade slider has a wheel locking mechanism for unlimited positions when securing the blade in place.
- MULTIPURPOSE HEAVY-DUTY DESIGN - The OLFA 18mm L-1 Utility Knife is perfect for tough cutting projects that require extra elbow grease. It delivers accurate cuts through drywall, roofing, flooring, rubber, gasket materials and more.
- THE OLFA STANDARD - As the original inventor of the Snap-Off Knife, OLFA has maintained a standard of cutting excellence for our quality and durability. Pairing your OLFA 18mm Utility Knife with OLFA 18mm Blades will provide optimal results.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Plastic, carbon tool steel |
| Brand | OLFA |
| Color | Standart |
| Item Length | 18 Millimeters |
| Handle Material | Abs,Plastic,Rubber,Stainless-steel,Steel |
| Blade Material | Stainless Steel |
| Item Weight | 2.5 Ounces |
| Style | Fine |
| Manufacturer | OLFA |
| UPC | 091511600049 091511200195 |
| Global Trade Identification Number | 00091511200195, 00091511600049 |
| Item Weight | 2.5 ounces |
| Item model number | 5003 |
| Is Discontinued By Manufacturer | No |
| Material Type | Plastic, carbon tool steel |
| Number of Items | 1 |
| Size | 6"L x 3"W x 1.5"H |
| Manufacturer Part Number | 5003 |

## Product Details

- **Material:** Plastic, carbon tool steel
- **Brand:** OLFA
- **Color:** Standart
- **Item Length:** 18 Millimeters
- **Handle Material:** Abs,Plastic,Rubber,Stainless-steel,Steel
- **Blade Material:** Stainless Steel
- **Item Weight:** 2.5 Ounces
- **Style:** Fine
- **Manufacturer:** OLFA
- **UPC:** 091511600049 091511200195

## Images

![18mm Heavy-Duty Utility Knife (L-1) - Multi-Purpose Custom Cutting Depth Utility Knife w/Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade - Image 1](https://m.media-amazon.com/images/I/61MYemvkaSL.jpg)

## Questions & Answers

**Q: I purchased elmer's (cork) foam board to mount a 26x26 inch jigsaw puzzle and now  need to the trim the foam board, do you think this tool would work?**
A: I have used this tool to cut everything from paper and foam board to building materials like fiberglass insulation and even roofing shingles.

**Q: Is there storage inside the knife for spare blades?**
A: No there is not.

**Q: How long is the cutting surface of the blade?**
A: The cutting blade area is 1 centimeter

**Q: Does this take the 9mm snap-off blades?**
A: It uses 18 mm blades part number LB-10B snap off blades

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice quality
*by D***B on January 3, 2026*

Blade doesn’t have any play when tightened like other knife’s, and it can be as long as you need it

### ⭐⭐⭐⭐⭐ Compact yet effective for cutting through cardboard
*by B***G on January 6, 2026*

Easy to hold and switch blades!

### ⭐⭐⭐⭐⭐ Good multi-purpose work knife.
*by K***N on October 24, 2025*

This has a knob to lock in the length of the blade. The blades are very sharp and can keep the sharp edge a little longer than other knives.

## Frequently Bought Together

- OLFA 18mm Heavy-Duty Utility Knife (L-1) - Multi-Purpose Custom Cutting Depth Utility Knife w/Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade
- OLFA 5009 LB-10B Snap-Off Heavy Duty Blade, 10 Pack
- OLFA UltraSharp Black Snap-Off Heavy-Duty Blade

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-27*