Description: * 1/4" dia. 1-1/4" long steel shank, fits most grinders. * Durable rubber pad, aluminum core with nickel-plated removable steel shank. * Professional tools perfect for grinding discs as well as conditioning discs. Specification: * Type: Grinding Disc * Color: Black (As pictures show) * Material: Rubber + Steel * Diameter: 25/50/75MM (Approx.). * Rod Length: 45MM (Approx.) * Shank Diameter: 6MM ( approx)* Screw hole: M6* Maximum speed: 20000RPM* Quantity: 1pcs Package contents: (Optional) 1 * Grinding disc holder (1 inch/2 inch/3 inch) Note:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.