Click to expand Tap to zoom Olfa HB-20B Extra Heavy Duty Blades 20pack Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $25.20 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart High-quality carbon tool steel.7 cutting edges per blade. Fits any olfa extra heavy-duty knife. Power source type: Hand-powered