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. 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. Fits all standard knives.
- 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