42 Pcs Sanding Drill Bits with 3 mm Shank, Abrasive Grinding Head Accessories for Polishing and Rust Removal, Red Corundum

Grinding drill bit: made of red corundum sand with uniform grain size, sharp and wear-resistant, solid and sharp, durable. Complete features: 3 mm shank for electric drills, cordless drills, die grinders and most rotary tools, convenient for flexible use in different scenarios. Unique design: the abrasive stone grinding wheel set includes three sizes of sharpening stones: 10 mm cylindrical, 15 mm cylindrical and 10 mm spherical (14 pieces of each size). Widely used: suitable for dressing, polishing and grinding all kinds of objects, including molds, metals, plastics, stainless steel, agate and wood, and can also be used for grinding and polishing non-metallic materials such as stone and glass, etc.