Best Duct Knife In September 2026

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If you are looking for the Best Duct Knife of top quality, read our detailed reviews on them here before making the purchase decision.

To help you in your search, we have completed this list of the Best Duct Knife.

Top Rated Best Duct Knife Of 2026

Rank	Product Name	Score
1	DA71000 KLENK TOOLS Dual Duct / Insulation Knife - Rosewood Handle Buy Now	9.7 Buy Now
2	Malco FGK Fasgroov Duct Knife Buy Now	9.5 Buy Now
3	DA71010 KLENK TOOLS Ergonomic Dual Duct / Insulation Knife Buy Now	9.1 Buy Now
4	Knife, Serrated Stainless Steel Bladed Duct Knife for Flexible Duct and Duct Board Buy Now	8.8 Buy Now
5	Hilmor 1891331 SMTDK Duct Knife - HVAC Sharp Duct Tool Buy Now	8.6 Buy Now
6	Malco DK6S Cushioned Gripped Serrated Duct Knife Buy Now	8.3 Buy Now
7	R. Murphy 4" Square Point Shoe Makers Cobbler Repair Leather Working. Green Handle Buy Now	8.1 Buy Now
8	MLTOOLS | Hori-Hori Weeding & Digging Knife for Metal Detector | HD 12.5 Buy Now	7.8 Buy Now
9	Fuller Tool 320-0100 Insulation Knife - Double Sided Buy Now	7.5 Buy Now
10	MTECH USA MT-20-03 Fixed Blade Knife, Titanium Double Edge Blade, Pakkawood Handle, 9-Inch Buy Now	7.2 Buy Now

1. DA71000 KLENK TOOLS Dual Duct / Insulation Knife - Rosewood Handle

• A heavier and thicker blade than other duct knives.
• Stainless steel, 3mm blade, serrated on one edge and smooth on the other
• Designed for the hvac contractor but great for all construction trade professionals
• Slim, reinforced, ripstop nylon sheath included -- designed to hang from your belt.
• Beautiful rosewood handle with solid brass rivets.

2. Malco FGK Fasgroov Duct Knife

• Rounded scoring edge
• Comfortable molded handles
• Fasgroov duct knife

3. DA71010 KLENK TOOLS Ergonomic Dual Duct / Insulation Knife

• Stainless steel, 3mm blade, serrated on one edge and smooth on the other
• Longer, sharper and better other duct knives.
• Designed for the hvac contractor but great for all construction trade professionals
• Slim, reinforced, ripstop nylon sheath included -- designed to hang from your belt.

4. Knife, Serrated Stainless Steel Bladed Duct Knife for Flexible Duct and Duct Board

• Double-edged knife-regular and serrated
• Cuts duct board and flexible duct
• Cushion-grip handle for comfort
• Klein tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... since 1857
• Puncture resistant nylon sheath with belt loop

5. Hilmor 1891331 SMTDK Duct Knife - HVAC Sharp Duct Tool

• Stainless steel duct knife: a hardened stainless steel blade increases life and durability
• Comfortable grip: over-molded handles reduce hand fatigue and won't slip or twist
• Safe and easy storage: a puncture-resistant nylon sheath with a belt loop allows for quick and easy storage
• Versatile: serrated and standard cutting edges made to cut duct board and flexible duct
• Long lasting: this duct knife is an hvac technician's best friend as it keeps it sharpness over time

6. Malco DK6S Cushioned Gripped Serrated Duct Knife

• Package height:21.0"
• Package length:18.0"
• Country of origin:china
• Package width:18.0"

7. R. Murphy 4" Square Point Shoe Makers Cobbler Repair Leather Working. Green Handle

• Proudly made in the usa
• R murphy square point shoe knife - 3-3/8 inch (8.6 cm) blade, 17 gauge (1.5 mm) steel and green hardwood handle.
• Developed for those artisans who cut, trim, or split leather, rubber and plastics.
• Handles are made from selected hardwoods, stained green.
• The blade is made from 17 gauge (1.5 mm) chrome vanadium steel that has been hardened, ground, polished and honed to perfection.

8. MLTOOLS | Hori-Hori Weeding & Digging Knife for Metal Detector | HD 12.5

• Premium-quality made from high-grade mirror polished stainless steel our garden digging tool is rust-proof, break-resistant and ultra-durable, and the gardeners knife also boasts a contoured & textured handle which flares near the blade for improved safety, and offers a non-slip grip.
• All purpose hori hori knife whether you are an avid gardener, occasional hunter, adventurous hiker, daring camper or an enthusiastic fisher, mltools garden utility knife will be your indispensable companion at all times use it as a knife, a saw, a cutting tool, or as a digging tool.
• Nifty scale & case marked graded depth scale on the garden harvesting knife also makes it a useful measuring tool for planting bulbs/shoots, while the stylish nylon case with belt loop not only makes carrying the hunter knife easier but also offers safe storage & makes it an attractive gift!
• Quality guarantee manufactured under superior level of quality control, our knife for gardening or garden dig tool comes with 100% risk-free satisfaction guarantee, and the garden knife is sure to impress you with its functional effectiveness, sturdy build, and ergonomic design.
• Heavy-duty gardening knife featuring a tough serrated edge on one side & a razor-sharp cutting edge on the other, our gardener knife can be used to saw stalks/branches/roots, dig into not-so-soft soil, weed, furrow, pry, transplant, harvest produce, or simply to remove plants! overall 12.5" long

9. Fuller Tool 320-0100 Insulation Knife - Double Sided

• Specifically designed to cut mineral wool and other types of insulation
• Quality you can depend on.
• Composite grip for comfort
• Backed by fuller's limited lifetime warranty
• 11" stainless steel blade.

10. MTECH USA MT-20-03 Fixed Blade Knife, Titanium Double Edge Blade, Pakkawood Handle, 9-Inch

• Includes nylon sheath
• 4.75"satin blade and bolster
• 9" overall
• 4"red pakkawood handle