Spot Weld Drill Bit Set Spot Welder Bit Cutter Welding Spot Removal HSCO Bits (1/4&rdquo;, 5/16&rdquo;, 3/8&rdquo; Titanium Bits) Set Includes: 6.5mm (1/4) Bit, 8mm (5/16) Bit and 10mm (3/8) Bit Nib Tipped Design to Increase Accuracy and Prevent Slipping Commonly Used to Remove Spot Welds from Automobile Frames Each Bit has a 45mm (1-3/4) Shaft Length with Flat Side for Easy Chuck Hold on Any Spot Weld Drill Includes Durable Aluminum Storage Case with Molded Foam for a Snug Hold