Wahl ultimate 7f blade professional dog clipper replacement blade designed with upgraded tooth geometry for smooth feeding of the hair and leaves no clipper tracks. Wahl blades are made using the highest standard machinery. Every blade is precision ground from stainless steel to ensure sharpness and durability, improving the quality of your cutting experience. This blade is made from high carbon, precision ground steel making the blade more durable, longer lasting and stays sharper. Designed with upgraded tooth geometry for smooth feeding that leaves no clipper tracks and cuts 2.5 times faster than the standard competition blade. Blade width 50mm cutting length 4mm replacement blade for the wahl power grip, max 45, km5 and km10 clippers, available in a variety of cutting lengths.