Olfa 25mm Snap-Off Ultra-Sharp Black Blades - 20 pack

Designed for maximum cutting performance and ideal for applications where superior sharpness is required. Made from high-quality carbon tool steel, these blades are developed using a special double honing process for extreme sharpness and are 25% sharper than OLFA silver 25mm HB blades. Fits any Extra Heavy-Duty knife. 7 cutting edges per blade.