Simply buy Insulation knife with 1 blade, 140 mm long

Fixed Blade Knife

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TOUGHBUILT Insulation 1-in 1-Blade Utility Knife in the Utility Knives department at

The ToughBuilt Insulation Knife + Sheath (TB-H4S-40-IK-2) is designed for optimal edge retention and durability. The titanium-coated stainless steel blade is engineered to stay sharper up to 2X longer when cutting mechanical and HVAC insulation. A full metal tang provides durability for tough cuts day after day. The durable molded sheath provides easy carry and storage.

Toughbuilt TB-H4S-40-IK-2 Insulation Knife + Sheath

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Fixed Blade Knife

Insulated Cable Sheathing Knife

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The Milwaukee 6 in. Smooth Blade Insulation Knife is designed for optimal edge retention and durability. Milwaukee engineered the heat treated stainless steel blade to stay sharper up to 2X longer when cutting mechanical and HVAC insulation. The insulation blade is cryogenically hardened for the best jobsite performance. The Milwaukee insulation knife has a full metal tang that provides durability for tough cuts and a rounded handle allows for smoothing tapes and adhesive laps.

Milwaukee 48-22-1921 Smooth Blade Insulation Knife

The Milwaukee 6 in. Smooth Blade Insulation Knife is designed for optimal edge retention and durability. Milwaukee engineered the heat treated stainless steel blade to stay sharper up to 2X longer when cutting mechanical and HVAC insulation. The insulation blade is cryogenically hardened for the best jobsite performance. The Milwaukee insulation knife has a full metal tang that provides durability for tough cuts and a rounded handle allows for smoothing tapes and adhesive laps.

Milwaukee 48-22-1921 Smooth Blade Insulation Knife