4in Diamond Grinding Disc Wheel Coated Grit 60 Convex Stone Tools for Angle Grinder Features: Has high hardness, outstanding impact resistance, nice wear resistance and long service life. Super-hard, effectively minimize material loss and maximize grinding assembly performance. Helps to maintain your valuable tools in optimum condition, saving your effort. Used to cut hard and brittle materials, such as glass, ceramics, etc. Suitable for small job shops and numerous general purpose applications. Specifications: Material: metal Color: silver Outside diameter: 100mm / 4in Arbor hole: 16mm / 5/8in Thickness: 1.3mm / 0.05in Grit: 60 coarse RPM: 12000 Package size: 110 * 110 * 15mm / 4.33 * 4.33 * 0.59in Package weight: 52g / 1.83ounces Note: Please allow a little measuring deviation due to manual measurement. Package List: 1 * Grinding Disc