---
product_id: 304545659
title: "ALLEX Insulation Knife with Sheath 8\" Long Cut, Japanese Stainless Steel, Insulation & Styrofoam Cutter with Blade Case, Serrated Sharp Duct Knife Tool, Made in JAPAN"
brand: "allex"
price: "€ 42.92"
currency: EUR
in_stock: true
reviews_count: 13
category: "Allex"
url: https://www.desertcart.hr/products/304545659-allex-insulation-knife-with-sheath-8-long-cut-japanese-stainless
store_origin: HR
region: Croatia
---

# 8" serrated blade for precision cuts Safety sheath for secure storage & transport Premium Japanese stainless steel blade ALLEX Insulation Knife with Sheath 8" Long Cut, Japanese Stainless Steel, Insulation & Styrofoam Cutter with Blade Case, Serrated Sharp Duct Knife Tool, Made in JAPAN

**Brand:** allex
**Price:** € 42.92
**Availability:** ✅ In Stock

## Summary

> 🔪 Cut like a pro, carry with confidence!

## Quick Answers

- **What is this?** ALLEX Insulation Knife with Sheath 8" Long Cut, Japanese Stainless Steel, Insulation & Styrofoam Cutter with Blade Case, Serrated Sharp Duct Knife Tool, Made in JAPAN by allex
- **How much does it cost?** € 42.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/304545659-allex-insulation-knife-with-sheath-8-long-cut-japanese-stainless)

## Best For

- allex enthusiasts

## Why This Product

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

## Key Features

- • **Safety First, Always:** Includes a protective blade sheath for safe carrying and storage—no compromises on workplace safety.
- • **Lightweight Yet Robust:** Resin handle design keeps the knife featherlight at just 4 oz for fatigue-free use.
- • **Versatile for Pros & DIYers:** Perfect for fiberglass, mineral wool, polyurethane foam, and more—your go-to insulation cutting tool.
- • **Effortless Precision Cutting:** Serrated 8-inch blade slices through insulation & styrofoam with razor-sharp accuracy.
- • **Crafted in Japan, Built to Last:** High-grade Japanese stainless steel ensures durability and smooth, chip-free cuts every time.

## Overview

The ALLEX Insulation Knife features an 8-inch serrated blade forged from premium Japanese stainless steel, designed specifically for clean, efficient cutting of insulation materials like fiberglass, styrofoam, and mineral wool. Lightweight with a resin handle and equipped with a safety sheath, this tool blends professional-grade performance with everyday convenience, making it indispensable for both contractors and DIY enthusiasts.

## Description

Buy ALLEX Insulation Knife with Sheath 8" Long Cut, Japanese Stainless Steel, Insulation & Styrofoam Cutter with Blade Case, Serrated Sharp Duct Knife Tool, Made in JAPAN: Utility Knives - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Good quality knife - Works really well for cutting fiberglass insulation
Review: Worth it - Its way better than a uility knife and board.

## Features

- Utility Insulation Cutting Tool: It is an easy-to-use Japanese insulation cutter. This versatile knife is ideal for cutting various insulator materials, styrofoam, polyurethane foam, foam, glass wool, mineral wool, Rockwool, fiberglass insulation, etc. Both home DIY users and professional users can use this versatile knife. As it is a resin handle, it is very lightweight.
- Razor Sharp Japanese Steel: The blade uses Japanese high-grade stainless steel. The excellent sharpness of the Japanese steel knife minimizes chips and provides a smooth cutting feel. Improves work efficiency even when cutting materials that are difficult to cut with a regular cutter.
- Long and Serrated Blade: The 8 inch long blade can cut even large-sized insulation materials. It has a unique wave blade edge (serrated blade) processing specialized for cutting heat-insulating materials and styrofoam.
- Safety Blade Cover: It comes with a blade cover that is convenient for safe carrying. You can also store it safely at home or in your workplace.
- Overall Length: 13" / Blade Length: 8" / Blade thickness: 1.5 mm / Weight 4 oz / Made in JAPAN

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08ZMR58B9 |
| Batteries Required? | No |
| Best Sellers Rank | #134,891 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #546 in Utility Knives |
| Blade Color | Silver |
| Blade Edge | Serrated |
| Blade Length | 8 Inches |
| Blade Material | Stainless Steel |
| Brand | ALLEX |
| Color | Resin |
| Construction Type | Forged |
| Customer Reviews | 4.4 4.4 out of 5 stars (228) |
| Date First Available | March 25, 2021 |
| Handle Material | Fiberglass,Resin Handle,Stainless Steel,Steel |
| Included Components | Sheath |
| Is Dishwasher Safe | No |
| Item Length | 13 Inches |
| Item Package Quantity | 1 |
| Item Weight | 3.84 ounces |
| Item model number | 34103 |
| Manufacturer | ALLEX |
| Material | Japanese Stainless Steel |
| Part Number | 34103 |
| Size | 8 inches (Blade) / 13 inches (Overall) |
| Special Features | Lightweight |
| Style | 8" (Resin Handle) |

## Product Details

- **Blade Edge:** Serrated
- **Blade Material:** Stainless Steel
- **Brand:** ALLEX
- **Color:** Resin
- **Handle Material:** Fiberglass,Resin Handle,Stainless Steel,Steel

## Images

![ALLEX Insulation Knife with Sheath 8" Long Cut, Japanese Stainless Steel, Insulation & Styrofoam Cutter with Blade Case, Serrated Sharp Duct Knife Tool, Made in JAPAN - Image 1](https://m.media-amazon.com/images/I/51tvi5FC6BL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality knife
*by H***1 on January 6, 2026*

Works really well for cutting fiberglass insulation

### ⭐⭐⭐⭐⭐ Worth it
*by B***L on December 6, 2025*

Its way better than a uility knife and board.

### ⭐⭐⭐⭐⭐ Works great!
*by A***B on September 28, 2023*

I’ve used it to cut and lay dozens of bats of fiberglass insulation and rock wool. It cuts quickly and cleanly and still seems sharp even after my 8th package of rock wool. Good purchase and I feel like I’ve already gotten my moneys worth out of it.

## Frequently Bought Together

- ALLEX Insulation Knife with Sheath 8" Long Cut, Japanese Stainless Steel, Insulation & Styrofoam Cutter with Blade Case, Serrated Sharp Duct Knife Tool, Made in JAPAN
- Hyde Tools 60780 Square Point Knife, 8-Inch by 1-Inch/14-Gauge Wood Handle
- Norton Utility File with Handle, Silicon Carbide, 14" Overall Length, Grit Coarse

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**Shop now:** [https://www.desertcart.hr/products/304545659-allex-insulation-knife-with-sheath-8-long-cut-japanese-stainless](https://www.desertcart.hr/products/304545659-allex-insulation-knife-with-sheath-8-long-cut-japanese-stainless)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-24*