---
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: "₨628"
currency: SCR
in_stock: true
reviews_count: 13
category: "Allex"
url: https://www.desertcart.sc/products/304545659-allex-insulation-knife-with-sheath-8-long-cut-japanese-stainless
store_origin: SC
region: Seychelles
---

# 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:** ₨628
**Availability:** ✅ In Stock

## Summary

> 🔪 Cut through insulation like a pro — precision meets Japanese craftsmanship!

## 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?** ₨628 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/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

- • **Safe & Ready to Go:** Includes a protective sheath for safe carrying and storage, so you’re always prepared
- • **Lightweight & Ergonomic:** Resin handle ensures comfortable grip without fatigue during extended use
- • **Engineered for Durability:** Forged Japanese stainless steel blade stays sharp longer, boosting your efficiency
- • **Versatile Insulation Master:** Perfect for fiberglass, mineral wool, polyurethane foam, and more—DIY or pro-grade
- • **Razor-Sharp Precision Cutting:** Serrated 8-inch blade slices through insulation & styrofoam effortlessly

## Overview

The ALLEX Insulation Knife features an 8-inch serrated blade crafted from high-grade Japanese stainless steel, designed specifically for cutting a wide range of insulation materials including fiberglass, styrofoam, and mineral wool. Lightweight with a resin handle and equipped with a safety sheath, this tool combines durability, precision, and safety for both professional and DIY users.

## 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: Remains sharp! - I use this to cut off spray foam in areas where my reciprocal blade couldn't reach. The blade itself is very flexible and allows you to cut with precision. The project of over, however the blade is still sharp, getting a lot of beating

## 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 |
| Best Sellers Rank | #164,150 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #643 in Utility Knives |
| Blade Color | Silver |
| Blade Edge | Serrated |
| Blade Length | 8 inches |
| Blade Material | Stainless Steel |
| Blade Material Type | Stainless Steel |
| BladeLength | 8 inches |
| Brand | ALLEX |
| Brand Name | ALLEX |
| Color | Resin |
| Construction Type | Forged |
| Customer Reviews | 4.4 out of 5 stars 226 Reviews |
| Handle Material | Fiberglass, Resin Handle, Stainless Steel , Steel |
| Included Components | Sheath |
| Item Length | 13 inches |
| Manufacturer | ALLEX |
| Manufacturer Part Number | 34103 |
| Material Type | Japanese Stainless Steel |
| Model Number | 34103 |
| Size | 8 inches (Blade) / 13 inches (Overall) |
| Unit Count | 1 Count |

## 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)
![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 2](https://m.media-amazon.com/images/I/91RGfPBtKWL.jpg)
![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 3](https://m.media-amazon.com/images/I/31uDM9w03fL.jpg)
![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 4](https://m.media-amazon.com/images/I/31DsKq--dcL.jpg)
![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 5](https://m.media-amazon.com/images/I/41yFrWzgoJL.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

### ⭐⭐⭐⭐⭐ Remains sharp!
*by A***. on November 12, 2024*

I use this to cut off spray foam in areas where my reciprocal blade couldn't reach. The blade itself is very flexible and allows you to cut with precision. The project of over, however the blade is still sharp, getting a lot of beating

### ⭐⭐⭐⭐⭐ Right tool for Mineral (Rock) wall insulation.
*by O***G on November 10, 2024*

If you are not using this you're making a mistake. This is the best way to cut mineral wool and other insulation. Doing a van conversion, I used it on mineral wool, fiberglass, and thinsulate. Highly recommended. I understand it also makes a great bread knife, but I never used it in that application.

## 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
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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-09-30*