Replacement blade for the 3/8" rotary spot weld cutter. Size: 3/8" double ended cutting blade. Includes 3 in a pack. Two blades in one This cutting blade helps to remove spot welds holding sheet metal. It can also be used to cut small access holes in sheet metal. The blade is double ended; when one side of the blades becomes dull turn the blade 180 degrees for fresh cutting surface.