ITEM NAME:3/8'' HSS DOUBLE SIDED Rotary Spot Weld Remover Sheet Metal Drill Bit img *{margin:0;padding:0;.1 Piece Rotary Spot Weld Cutter. Provides better panel separations than a panel cutter. Use: iron, cast iron, alloy steel, carbon steel, die steel. Material: Stainless Steel. High strength and hardness.