OLFA Ultra Sharp Black Blades

• The OLFA Ultra Sharp heavy-duty black snap-off blades are exclusively designed for maximum cutting performance and are ideal for applications where superior sharpness is required.
• OLFA black blades are double-honed for extreme sharpness and are 25% sharper than the OLFA silver Heavy-Duty LB blades.
• Made from a high-quality carbon tool steel.
• 8 cutting edges per blade