HSS Double Sided Rotary Spot Welding Broca Metal 8 Sided Cutter 9.5mm Bitum Remover Drill Bit Hole Opener Cutter Spot Weld Tools

[Product specification]: Diameter of the saw tooth part: 5/16" (8mm) Or 3/8" (9.5mm) Hexagon rod diameter: 7mm Material: High-speed steel Use tools: Ordinary pistol drill Notes: HSS-Co Titanium plated drills 3Pcs, need to be used with pneumatic spot welding gun. [Features]: 1. High-quality high-speed steel, high hardness, cutting resistance, low loss and long service life. 2. Double-sided blades allow for twice the efficiency. 3. Thin iron, stainless steel, aluminum plate, all kinds of metal pipes can be drilled. 4. The product can separate spot welding of sheet metal, panels, etc. 5. Tips -Pre-drilling a hole in the center of the spot weld or using a center punch to create a starting point provides extra guidance/stability during the beginning of the work.