10 Lot 1 3/8 Inch 35MM Diamond Coated Rotary Cutting Cut-off Wheel Disc Ideal For Cutting: Gem stones, metal, glass, carbide and other hard material Grain fineness number: Approx. 150 Disc Diameter: Approx. 35 mm Disc Thickness: Approx. 0.5mm Shank Diameter: Approx. 3.1 mm