Sharp double-sided blades made of high quality heat-resistant and thick steel. The perfect tool can remove the spot-welded plate or metal plate without deforming the metal or damaging the underlying plate, reducing sliding welding and the need to break the weld. efficient. Suitable for thin stainless steel plate, iron plate, aluminium plate, FRP or other thin metal plate.<br> The preferred material is made of high quality steel with excellent heat resistance, high hardness and wear resistance. The drill center pin is spring loaded. The diameter of the cutting blade is 3/8 inch, and the shaft has a standard size of 1/4 inch. With a flat shank to prevent rotation in the drill chuck.<br> Easy separation: the drill of the spot welding machine can easily separate the spot welding plate without warping the metal plate. Separate spot welding from sheet metal, panels etc. and cut out small inspection holes. Also known as: spot welding drill, spot welding drill, spot welding drill, spot welding drill, spot welding drill, spot welding cutter, rotary spot weld cutter sets double sided, power drill spot welding