---
product_id: 142251106
title: "OLFA 18mm Heavy-Duty Utility Knife (L-5) - Fiberglass, Chemical Resistant"
brand: "olfa"
price: "$30.51"
currency: USD
in_stock: true
reviews_count: 13
category: "Olfa"
url: https://www.desertcart.us/products/142251106-olfa-18mm-heavy-duty-utility-knife-l-5-fiberglass-chemical
store_origin: US
region: United States of America
---

# Custom ratchet lock with unlimited positions 18mm ultra-sharp snap-off blade Fiberglass-reinforced ergonomic handle OLFA 18mm Heavy-Duty Utility Knife (L-5) - Fiberglass, Chemical Resistant

**Brand:** olfa
**Price:** $30.51
**Availability:** ✅ In Stock

## Summary

> 🔪 Cut like a pro, lock in precision, and never settle for less!

## Quick Answers

- **What is this?** OLFA 18mm Heavy-Duty Utility Knife (L-5) - Fiberglass, Chemical Resistant by olfa
- **How much does it cost?** $30.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/142251106-olfa-18mm-heavy-duty-utility-knife-l-5-fiberglass-chemical)

## 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

- • **Precision Cutting Power:** Razor-sharp Japanese steel blade with 8 snap-off segments for flawless, industrial-grade cuts every time.
- • **Customizable Safety Lock:** Innovative ratchet wheel locking system lets you set exact blade depth for maximum control and safety.
- • **Ergonomic & Durable Grip:** Fiberglass-reinforced rubber handle designed for all-day comfort and chemical resistance in tough MRO environments.
- • **Trusted Industry Standard:** From the original Snap-Off Knife inventor, OLFA guarantees unmatched quality and durability for pros.
- • **Versatile Heavy-Duty Design:** Cuts through drywall, roofing, rubber, and more—plus a multi-purpose metal pick for non-blade tasks.

## Overview

The OLFA 18mm Heavy-Duty Utility Knife (L-5) features an ultra-sharp Japanese stainless steel snap-off blade with 8 segments, housed in a fiberglass-reinforced, chemical-resistant ergonomic handle. Its custom ratchet lock system offers unlimited blade depth settings, making it ideal for professional contractors and industrial use. Designed for precision and durability, this knife excels in cutting drywall, roofing, rubber, and more, backed by OLFA’s legacy as the original Snap-Off Knife innovator.

## Description

OLFA 18mm Heavy-Duty Utility Knife (L-5) - Fiberglass, Chemical Resistant | 18mm black snap-off, fiberglass rubber handle, chemical resistant - Paint and MRO cutting - Contractors and Construction - desertcart.com

Review: Best utility knife on the market - Best Utility Knife I've ever owned!!! Way better than the big box store trash! Followed a recommendation of a content creator and don't regret it. Stands up to all the abuse and functions so much better than most others
Review: Super Sharp - I love Olfa knives. This is very well designed and cuts effortlessly. Much better than a traditional utility knife. Don't try to twist or pry, you'll snap off the blade. Great for slicing through thick foam insulation boards.

## 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 |
| Best Sellers Rank | #30,438 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #169 in Utility Knives |
| Blade Material | Metal, Stainless Steel |
| Brand | OLFA |
| Brand Name | OLFA |
| Color | Black |
| Customer Reviews | 4.8 out of 5 stars 970 Reviews |
| Global Trade Identification Number | 00091511200461 |
| Handle Material | Stainless Steel,Fiberglass,Fiberglass Handle,Metal,Rubber,Steel |
| Handle Type | Manual-Retractable |
| Included Components | L-5 Fiberglass Rubber Grip Ratchet-Lock Utility Knife |
| Item Length | 8.7 inches |
| Item Weight | 3.04 ounces |
| Manufacturer | OLFA |
| Manufacturer Part Number | 1116110 |
| Material | Fiberglass, Stainless Steel |
| Material Type | Fiberglass, Stainless Steel |
| Model Number | 1116110 |
| Product Style | Knife |
| UPC | 091511200461 |
| Unit Count | 1 Count |

## 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
- **Material:** Fiberglass, Stainless Steel
- **Number of Packs:** 1
- **Style:** Knife
- **Unit Count:** 1.0 Count

## Images

![OLFA 18mm Heavy-Duty Utility Knife (L-5) - Fiberglass, Chemical Resistant - Image 1](https://m.media-amazon.com/images/I/51C80aiAb+L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best utility knife on the market
*by M***T on May 30, 2026*

Best Utility Knife I've ever owned!!! Way better than the big box store trash! Followed a recommendation of a content creator and don't regret it. Stands up to all the abuse and functions so much better than most others

### ⭐⭐⭐⭐⭐ Super Sharp
*by M***K on February 20, 2026*

I love Olfa knives. This is very well designed and cuts effortlessly. Much better than a traditional utility knife. Don't try to twist or pry, you'll snap off the blade. Great for slicing through thick foam insulation boards.

### ⭐⭐⭐⭐⭐ OLFA utility knife
*by A***R on May 3, 2026*

A strong, quality utility knife at a reasonable price. Highly recommended...John

## 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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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-27*