100Pcs Polishing Stone Head Grinding Wheel Burr Bit for Grinder Pink Shank Diameter 3mm Features: 1. Use abrasive and shaft handle, high bonding strength and good coaxiality. 2. It is installed on electric tools such as electric grinders and has good wear resistance and grinding performance. 3. Grinding wheel grinding head is mainly used for DIY grinding, polishing/wood, metal, mold grinding and polishing, power tool matching and more materials for renovation, polishing, grinding and sanding. 4. High hardness, durable and not easy to wear. 5. Can be universal pneumatic angle grinder, electric angle grinder and manual angle grinder chuck for 3mm specifications 6. Suitable for grinding and polishing of ceramics, plastics, abrasives, steel, sheet metal, copper and aluminum. 7. For machinery, bearings, molds, deep holes in castings, inner walls of profiled surfaces, welds, grinding and deburring of welds, used inner circles, rounded corners, grooves, curved surfaces, tapered surfaces, etc. Special surface grinding 8. There is a box that you can store easily.   Specification: Condition: Weight: Approx. 394-409g / 13.9-14.4oz Box Size: Approx. 115 * 115 * 60mm / 4.5 * 4.5 * 2.4in   Package List: 10Pcs 3*10mm Cylindrical Grinding Polishing Head 10Pcs 3*8mm Cylindrical Grinding Polishing Head 10Pcs 3*6mm Cylindrical Grinding Polishing Head 10Pcs 3*5mm Cylindrical Grinding Polishing Head 10Pcs 4*4mm Cylindrical Grinding Polishing Head 10Pcs 3*10mm Warhead Shape Grinding Polishing Head 10Pcs 3*8mm Warhead Shape Grinding Polishing Head 10Pcs 3*6mm Warhead Shape Grinding Polishing Head 10Pcs 3*5mm Warhead Shape Grinding Polishing Head 10Pcs 4*4mm Warhead Shape Grinding Polishing Head 1 * Box