Feature:1. The product is practical, can provide better panel spacing than panel cutters2. High strength and high hardness, durable to use3. Easily separate spot welded panels without twisting metal plates4. The product can separate spot welding of sheet metal, panels, etc.5. Suitable for iron, cast iron, alloy steel, carbon steel and die steelSpecification:Item Type: Spot Weld Drill BitOptional Style(sawtooth part diameter): 5/16in (8mm), 3/8in (9.5mm)Material: 6542 High speed steel(sawtooth part).w-e-text table td,.w-e-text table th,;.w-e-text table,Package List:2 x Spot Weld Drill Bit