Designed to drill out spot welds using air powered or electric drills. The spot weld drill allows the top layer of the weld to be 'machined' away in a controlled manner leaving the second skin intact ready for the new panel to be fitted. 8mm HSS drill bit with integral spring loaded centre point. Automatic centre punch to create indent at centre of spot weld. The automatic centre punch does not require the use of a hammer so reducing the chance of deforming surrounding panel work. Always wear eye protection., Weight: 0.2425084882 Pounds, Manufacturer: Laser Tools