IRWIN 10504243 Bi Metal Knife Blades Pack of 100

Irwin 10504243 Bi Metal Knife Blades Pack of 100

IRWIN bi-metal blue blades combine the best of two metals electro-welded together.

The edge of the blade is made from high speed steel, which is much harder than standard carbon steel, and has been shown to last up to three times longer in user trials on plasterboard, dry walling, roofing, insulation, flooring and other heavy-duty materials.

The bulk of the blade is made from spring steel which can resist pressure applied from the side without snapping.

This blade stays sharp up to 3 x longer than standard blades

High-speed steel edge

Heat treated to greater hardness for longer life and edge sharpness

Fits all standard knives