【Usage】The spot drill bits can separate spot welds from sheet metal, plates, etc. Easily separate spot welded plates without the hassle of twisting metal plates. 【Remove Spot Welds】Use the 3-point drill bit - titanium coated HSS cobalt drill bits to drill into harder steel and stainless steel materials. The sizes are 6.5mm, 8mm and 10mm. 【Durable】The titanium coating ensures a smooth drilling experience that prevents the mat from overheating, thus prolonging performance. High strength and high hardness, durable in use. 【Easy Storage】Carrying box with foam inner tray for easy carrying, safe storage and quick organization. The foam tray includes printed size markings for easy identification. 【Advantage】Wide range of uses, easy to carry, fine workmanship and no burrs. Features: High strength and high hardness, durable in use. Easy to separate spot welded plates without metal plate twist. The spot welding bits can separate spot welding of sheet metal, plate, etc. Including 3pcs drill bit