THIS IS A PREMIUM LARGE SPOT WELD CUTTER. Double-end spotweld cutter with twice the tool life is the unique 3/8" diameter hardened & precision ground cutting tool that makes removing spot welded body panels fast & easy. Hollow design cuts around weld, thus hardness does not affect tool sharpness. With arbor, for use in any 1/4", 3/8", or 1/2" chuck hand held drill.