【Dimensions】Two spot welding drill bits are 65mm (2.56 inches) and 79mm (3.11 inches) long. 【High Quality】Made of cobalt-containing high speed steel, strong and durable, rust-proof and heat-resistant, stable performance【Unique Design】The drill head tip is designed for more precise operation and prevents slipping during use.【Operation】Simply put the drill on the pneumatic spot testing drill and the soldering point can be easily removed.Application:Mainly used in automotive and body repair work to remove weld points in boron and other materials. Product parameters: Drill size HSS Co 6: 65 mm x 4.8 mm. Drill size HSS Co 8: 79 mm x 6.9 mm. '*0.27'')Packing size: 115*75*9mmMaterial: Cobalt high speed steelPacking weight: 38gWarm Tips: Please allow slight errors in product size and color due to differences between measurement methods and display screens.Customer Service:If you have any questions or concerns about our products, please feel free to contact us. We will reply you within 24