








🔧 Cut smarter, not harder — the ultimate duct knife for pros who demand precision.
The Malco DK6S is a professional-grade duct knife featuring a 6-inch double-edged cutlery steel blade with one serrated and one smooth edge. Designed for cutting flexible fiberglass wool and duct board, it offers an ergonomic rubberized cushioned handle for comfort and a puncture-resistant nylon sheath for safety. Ambidextrous and resharpenable, this durable tool is a must-have for any serious tradesperson.
































| ASIN | B001943YPE |
| Age Range (Description) | limited time |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #24,452 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #38 in Knife Blades |
| Blade Edge | Plain, Serrated |
| Blade Length | 6 Inches |
| Blade Material | Alloy Steel |
| Blade Shape | Straight |
| Brand | Malco |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,168) |
| Date First Available | May 7, 2008 |
| Global Trade Identification Number | 00686046531175 |
| Hand Orientation | Ambidextrous |
| Handle Material | Rubber |
| Included Components | Storage Case |
| Is Discontinued By Manufacturer | No |
| Item Length | 10 Inches |
| Item Package Quantity | 1 |
| Item Weight | 2.4 ounces |
| Item model number | DK6S |
| Manufacturer | Malco |
| Material | Nylon, Steel |
| Model Name | Malco DK6S Double-Sided Smooth and Serrated Duct Knife |
| Number Of Pieces | 6 |
| Part Number | DK6S |
| Power Source | Hand Powered |
| Recommended Uses For Product | Cuts flexible-fiberglass wool, duct board |
| Reusability | Reusable |
| Size | 6" |
| Special Feature | Puncture Resistant Nylon Sheath. Serrated Edge. Double edged, cutlery grade steel blades. |
| Special Features | Puncture Resistant Nylon Sheath. Serrated Edge. Double edged, cutlery grade steel blades. |
| Style | Knife |
| UPC | 686046531175 |
| Warranty Description | Limited |
R**D
Best Ever
Best ever knife! best I ever got off Amazon! and I have bought alot! that kinife is super sharp the serrated blade is the sharpest I ever had out of the box. It's not just for cutting batton it will cut almost anything! If I had to have only one knife for any and everything including some of those pricey EDC one's this is it.
O**N
Great Quality
Excellent knife, stays on my tool belt
P**D
Works as a Hori knife
Got this as a less expensive and more durable alternative to the trendy Hori Hori knives used in gardening. Use for cutting turf, slicing roots, weeding, splitting perennial clumps, planting bulbs, cutting ties and wire and other garden tasks. Works great in that application. Whenever I go out into the garden I have this strapped on.
D**N
👍
Excelente producto
A**M
Union sheet metal worker, use this daily
Great quality construction, comfortable handle, both blades are super sharp! The ball bearing in the handle is odd, but weirdly comfortable when handling, who knew?! I use this to cut duct liner, flex duct, and have used it to cut weather insulation (duct wrap) as well. Works great and stays sharp. The belt loop on the sheath does fit through a 3” tool belt so that’s a huge plus! Overall great product! I was hesitant at first to get this knife, because why do I need it? I have plenty other knives that work just fine. Get this knife! I wish I would’ve gotten it sooner!
C**E
Great knife/cheaply made sheath
Great knife for a good price. Cuts through flex duct with ease and easy to sharpen. Most guys I work with use klein which is heavier and does not hold an edge as well. However Malco could take a lesson from Klenk or even Milwaukee and provide a better sheath. Mine is basically nothing but duct tape at this point.
J**A
Muy bueno
D**D
Good tools
Good knife work perfect.
O**V
Good quality and price comparing to the similar products in stores.
E**R
Buen cortador de ductos. La funda es de Nylon nada resistente. Bueno para tareas de corte no difíciles.
B**L
It's a very solid duct knife, looks like you could use it for bear hunting too! Great quality
P**N
It Is ok but dont imagine getting à knife for your collection, steel Is so so
A**R
Knife design is ok. The jagged edge is effective, the straight edge is well sharpened, This is not a full tang knife. Handle is hard plastic and is very slippery. Not a great deal. I will not buy again. After 3 weeks of use, the rubber on the handle is peeling off. There are far better alternatives.
Trustpilot
1 month ago
1 month ago