---
product_id: 12826002
title: "Malco DK6S Double-Sided Smooth and Serrated Duct Knife with Sheath, For Cutting Flexible Duct and Ductboard, Ergonomic Cushion Grip, Resharpenable Cutlery Grade Steel Blades"
brand: "malco"
price: "$38.40"
currency: USD
in_stock: true
category: "Malco"
url: https://www.desertcart.us/products/12826002-malco-dk6s-double-sided-smooth-and-serrated-duct-knife-sheath
store_origin: US
region: United States of America
---

# ergonomic cushioned grip 6-inch double-edged blade puncture-resistant nylon sheath Malco DK6S Double-Sided Smooth and Serrated Duct Knife with Sheath, For Cutting Flexible Duct and Ductboard, Ergonomic Cushion Grip, Resharpenable Cutlery Grade Steel Blades

**Brand:** malco
**Price:** $38.40
**Availability:** ✅ In Stock

## Summary

> 🔪 Cut smarter, not harder — the ultimate duct knife for pros who demand precision.

## Quick Answers

- **What is this?** Malco DK6S Double-Sided Smooth and Serrated Duct Knife with Sheath, For Cutting Flexible Duct and Ductboard, Ergonomic Cushion Grip, Resharpenable Cutlery Grade Steel Blades by malco
- **How much does it cost?** $38.40 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/12826002-malco-dk6s-double-sided-smooth-and-serrated-duct-knife-sheath)

## Best For

- malco enthusiasts

## Why This Product

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

## Key Features

- • **Ambidextrous Design:** Perfectly balanced for left or right-handed professionals on the go.
- • **Safety First Sheath:** Puncture-resistant nylon sheath with belt loop and Velcro strap for secure carry.
- • **Ergonomic Comfort Grip:** Rubberized cushion handle reduces fatigue during extended use.
- • **Built to Last & Resharpen:** Cutlery-grade steel blades maintain sharpness and can be renewed.
- • **Dual-Edge Precision Cutting:** Smooth and serrated blades tackle any duct material with ease.

## Overview

The Malco DK6S is a 10-inch duct knife featuring a 6-inch double-edged cutlery-grade steel blade with one serrated and one smooth edge. Designed for cutting flexible fiberglass wool duct and duct board, it offers an ergonomic rubberized cushioned grip and comes with a puncture-resistant nylon sheath equipped with a belt loop and Velcro safety strap. Resharpenable and ambidextrous, this tool combines durability, comfort, and safety for professional-grade performance.

## Description

Product Description Duct Knife, Cutting Length 6 In., Overall Length 10 In., Handle Design Ergonomic Rubberized Cushioned Grip, Handle Color Black, Material Stainless Steel Blade, Features Resharpenable Double-Edge Blade has One Side Serrated and One Side Knife Edge, Blade Pierces Outer Skin, Insulation And Liner Of Flexible Round Fiberglass Wool Duct, Cuts In Either Direction, Includes Punture Resistant Nylon Sheath From the Manufacturer For cutting flexible fiberglass wool duct and duct board. Double edge blades are ideal for blind cuts in flex duct. Ergonomic cushion grip features one serrated cutting edge and comes with a puncture-resistant nylon sheath.

## Features

- Puncture Resistant Nylon Sheath.
- Serrated Edge.
- Heavy duty double edged, cutlery grade steel blades.
- Resharpenable Blades
- 2-3/4 Inch Wide Belt Loop and Velcro Safety Strap on Sheath

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001943YPE |
| Age Range Description | limited time |
| Best Sellers Rank | #35,534 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #54 in Knife Blades |
| Blade Edge | Plain, Serrated |
| Blade Length | 6 Inches |
| Blade Material | Alloy Steel |
| Blade Shape | Straight |
| Brand Name | Malco |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,200) |
| Global Trade Identification Number | 00686046531175 |
| Hand Orientation | Ambidextrous |
| Handle Material | Rubber |
| Included Components | Punture Resistant Nylon Sheath |
| Item Length | 10 Inches |
| Item Type Name | Malco DK6S Double-Sided Smooth and Serrated Duct Knife |
| Item Weight | 2.4 ounces |
| Manufacturer | Malco |
| Model Name | Malco DK6S Double-Sided Smooth and Serrated Duct Knife |
| Model Number | DK6S |
| Part Number | DK6S |
| Power Source | Hand Powered |
| Recommended Uses For Product | Cuts flexible-fiberglass wool, duct board |
| Reusability | Reusable |
| Size | 6" |
| Special Features | Puncture Resistant Nylon Sheath. Serrated Edge. Double edged, cutlery grade steel blades. |
| Style | Knife |
| UPC | 686046531175 |
| Unit Count | 1.0 Count |
| Warranty Description | Limited |

## Product Details

- **Age Range (Description):** limited time
- **Blade Length:** 6 Inches
- **Blade Material:** Alloy Steel
- **Brand:** Malco
- **Handle Material:** Rubber
- **Included Components:** Punture Resistant Nylon Sheath
- **Model Name:** Malco DK6S Double-Sided Smooth and Serrated Duct Knife
- **Recommended Uses For Product:** Cuts flexible-fiberglass wool, duct board
- **Special Feature:** Puncture Resistant Nylon Sheath. Serrated Edge. Double edged, cutlery grade steel blades.
- **Style:** Knife

## Images

![Malco DK6S Double-Sided Smooth and Serrated Duct Knife with Sheath, For Cutting Flexible Duct and Ductboard, Ergonomic Cushion Grip, Resharpenable Cutlery Grade Steel Blades - Image 1](https://m.media-amazon.com/images/I/51BgbcRDuHL.jpg)
![Malco DK6S Double-Sided Smooth and Serrated Duct Knife with Sheath, For Cutting Flexible Duct and Ductboard, Ergonomic Cushion Grip, Resharpenable Cutlery Grade Steel Blades - Image 2](https://m.media-amazon.com/images/I/71yxMCgvRHL.jpg)
![Malco DK6S Double-Sided Smooth and Serrated Duct Knife with Sheath, For Cutting Flexible Duct and Ductboard, Ergonomic Cushion Grip, Resharpenable Cutlery Grade Steel Blades - Image 3](https://m.media-amazon.com/images/I/71It-hr-tsL.jpg)
![Malco DK6S Double-Sided Smooth and Serrated Duct Knife with Sheath, For Cutting Flexible Duct and Ductboard, Ergonomic Cushion Grip, Resharpenable Cutlery Grade Steel Blades - Image 4](https://m.media-amazon.com/images/I/61+dCPAQrwL.jpg)
![Malco DK6S Double-Sided Smooth and Serrated Duct Knife with Sheath, For Cutting Flexible Duct and Ductboard, Ergonomic Cushion Grip, Resharpenable Cutlery Grade Steel Blades - Image 5](https://m.media-amazon.com/images/I/31huFDC1ruL.jpg)

## Available Options

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

## Questions & Answers

**Q: what is it made of**
A: My husband bought this knife for AC work. He said it's a pretty good knife. I think it had a steel blade and a plastic handle with a cushion that felt kind of like rubber

**Q: Is there a belt loop on the sheath?**
A: Yes there is a belt loop

**Q: Is the sheath replaceable**
A: No it is not

**Q: Is this a full Tang knife?**
A: Unsure but I don’t believe it is by the look of it

## Frequently Bought Together

- Malco DK6S Double-Sided Smooth and Serrated Duct Knife
- Knoweasy Zip Tie Tool and Tensioning and Cutting Tool for Plastic or Nylon Cable Tie
- Klein Tools 32768 Impact Driver Set, 3-in-1 SAE Impact Socket and Bit Holder, Flip Socket with 1/4 Nut Driver and 5/16 Nut Driver Hex Sizes, 3 and 5-Inch Lengths, 2-Piece

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-05*