---
product_id: 142251106
title: "18mm Heavy-Duty Utility Knife (L-5) - Multi-Purpose Custom Cutting Depth Precision Knife w/Reinforced Fiberglass Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade"
brand: "olfa"
price: "€ 19.13"
currency: EUR
in_stock: true
reviews_count: 13
category: "Olfa"
url: https://www.desertcart.ie/products/142251106-18mm-heavy-duty-utility-knife-l-5-multi-purpose-custom
store_origin: IE
region: Ireland
---

# Custom ratchet lock for precise blade depth 18mm ultra-sharp snap-off blade Fiberglass-reinforced ergonomic handle 18mm Heavy-Duty Utility Knife (L-5) - Multi-Purpose Custom Cutting Depth Precision Knife w/Reinforced Fiberglass Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade

**Brand:** olfa
**Price:** € 19.13
**Availability:** ✅ In Stock

## Summary

> 🔪 Cut sharp, cut smart — the OLFA edge every pro needs!

## Quick Answers

- **What is this?** 18mm Heavy-Duty Utility Knife (L-5) - Multi-Purpose Custom Cutting Depth Precision Knife w/Reinforced Fiberglass Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade by olfa
- **How much does it cost?** € 19.13 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/142251106-18mm-heavy-duty-utility-knife-l-5-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

- • **Multi-Task Master:** From drywall to gasket materials, plus a built-in metal pick for paint cans and caulk cleanup—your all-in-one cutting companion.
- • **Customizable Safety:** Ratchet wheel locking system lets you set exact cutting depths for maximum control and safety.
- • **Ergonomic Durability:** Fiberglass-reinforced rubber handle designed for all-day comfort and chemical resistance in tough environments.
- • **Precision Cutting Power:** Razor-sharp Japanese steel blade with 8 snap-off segments for unstoppable edge retention.
- • **Trusted Industry Standard:** Invented by OLFA, the original snap-off knife brand, ensuring unmatched quality and compatibility with all OLFA 18mm blades.

## Overview

The OLFA 18mm Heavy-Duty Utility Knife (L-5) features a premium Japanese tool-grade steel snap-off blade with 8 razor-sharp segments, housed in a chemically resistant fiberglass-reinforced handle for ergonomic comfort and durability. Its custom ratchet lock system allows precise blade depth control, making it ideal for heavy-duty industrial, construction, and multi-material cutting tasks. Trusted as the original snap-off knife innovator, OLFA ensures superior quality and blade compatibility for professional-grade performance.

## Description

OLFA 18mm Heavy-Duty Utility Knife (L-5) - Multi-Purpose Custom Cutting Depth Precision Knife w/Reinforced Fiberglass Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade - desertcart.com

Review: Of all my non-screwdriver tools, this is the one I use the most often. Absolutely indispensable - Besides being exemplary at cutting - being able to break and get a new sharp tip makes it so much better than a Stanley knife. I use it for caulking, working it into voids, particularly corners (clean the blade well with isopropyl alcohol beforehand to prevent contamination); and gardening, cutting unwanted new grow off cactus.
Review: Just what the Dr. ordered 8 ) - Good price, works as it should.

## Features

- RAZOR SHARP 18mm BLADE - Our knife is preloaded with an LBB Heavy Duty Stainless Steel Ultra Sharp Black Snap-Off Blade made from Japanese tool grade steel for unparalleled sharpness and superior edge retention. The 18mm blade has 8 razor-sharp snap-off segments. The heavy duty blade is great for industrial or construction applications.
- FIBERGLASS REINFORCED HANDLE - The knife features a rubber, fiberglass-reinforced handle that is ergonomically designed for long-term comfort and control. The stainless steel channel keeps the blade securely in place for safe operation. The handle is chemically resistant for easy clean up in paint and MRO environments.
- 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-5 Utility Knife is perfect for tough cutting projects that require extra elbow grease. It delivers precision cuts through drywall, roofing, flooring, rubber, gasket materials and more. The knife also includes a multi-purpose metal pick for all of those tasks where you shouldn’t use your blade tip. Perfect for opening paint cans, removing plate covers, cleaning out caulk, 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 |
|---------------|-------|
| ASIN | B003JN04Z6 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #33,554 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #191 in Utility Knives |
| Blade Material | Metal, Stainless Steel |
| Brand | OLFA |
| Color | Black |
| Customer Reviews | 4.8 4.8 out of 5 stars (897) |
| Date First Available | September 2, 2012 |
| Global Trade Identification Number | 00091511200461 |
| Handle Material | Stainless Steel,Fiberglass,Fiberglass Handle,Metal,Rubber,Steel |
| Included Components | L-5 Fiberglass Rubber Grip Ratchet-Lock Utility Knife |
| Is Discontinued By Manufacturer | No |
| Item Length | 8.7 Inches |
| Item Package Quantity | 1 |
| Item Weight | 3.04 ounces |
| Item model number | 1116110 |
| Manufacturer | OLFA |
| Material | Fiberglass, Stainless Steel |
| Measurement System | Metric |
| Number Of Pieces | 1 |
| Part Number | 1116110 |
| Special Features | Locking Blades |
| Style | Knife |
| UPC | 091511200461 |

## Product Details

- **Blade Material:** Metal, Stainless Steel
- **Brand:** OLFA
- **Color:** Black
- **Handle Material:** Stainless Steel,Fiberglass,Fiberglass Handle,Metal,Rubber,Steel
- **Item Length:** 8.7 Inches
- **Item Weight:** 0.19 Pounds
- **Manufacturer:** OLFA
- **Material:** Fiberglass, Stainless Steel
- **Style:** Knife
- **UPC:** 091511200461

## Images

![18mm Heavy-Duty Utility Knife (L-5) - Multi-Purpose Custom Cutting Depth Precision Knife w/Reinforced Fiberglass Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade - Image 1](https://m.media-amazon.com/images/I/51C80aiAb+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Of all my non-screwdriver tools, this is the one I use the most often. Absolutely indispensable
*by A***A on August 24, 2025*

Besides being exemplary at cutting - being able to break and get a new sharp tip makes it so much better than a Stanley knife. I use it for caulking, working it into voids, particularly corners (clean the blade well with isopropyl alcohol beforehand to prevent contamination); and gardening, cutting unwanted new grow off cactus.

### ⭐⭐⭐⭐⭐ Just what the Dr. ordered 8 )
*by B***E on December 19, 2025*

Good price, works as it should.

### ⭐⭐⭐⭐⭐ Should Last a Lifetime
*by B***I on July 30, 2025*

Nice Knife. I am a woodworker and use this type of knife for many purposes. Holds up nicely to my varied uses. Oddly enough, I have an Olfa Knife that I bought in decades ago that is still in perfect condition, after all these years.

## Frequently Bought Together

- OLFA 18mm Heavy-Duty Utility Knife (L-5) - Multi-Purpose Custom Cutting Depth Precision Knife w/Reinforced Fiberglass 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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**Shop now:** [https://www.desertcart.ie/products/142251106-18mm-heavy-duty-utility-knife-l-5-multi-purpose-custom](https://www.desertcart.ie/products/142251106-18mm-heavy-duty-utility-knife-l-5-multi-purpose-custom)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-17*