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.
Features:
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
Has been shown to last up to three times longer in user trials
The bulk of the blade is made from spring steel Resists 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