Descriptions: Diamond Coated Grinding Disc Wheel Convex Threading For Angle Grinder Using powder alloy thermoforming, long life, high hardness, wear resistance and excellent impact resistance. Products involved in the field of stone, ceramics, glass, carbide, gem stone processing, with slotted small, sharp and high characteristics, can be used to polish, cut surface, a wide range of applications. Specifications: Outside Diameter:100mm Thickness: 1mm Inner Hole: 16mm Grit: 150 (medium grit) RPM: 12000 Package Included: 1x Diamond Coated Grinding Disc Wheel