Features:_x000D_ _x000D_ Made of high quality material, wear resistance, long service life. _x000D_ Designed to grind carbide and hard steel, stone, metal and other processing and polishing. _x000D_ High grinding efficiency, smooth, unbroken edges, will not produce tremor. _x000D_ Mainly used in alloy knife, saw blade, saw tooth processing and grinding. _x000D_ Can processing tungsten steel, quenching processing steel, special hard brittle materials grinding. _x000D_ _x000D_ Specification:_x000D_ Material: Resin + Diamond_x000D_ Weight: Approx.230g/ 8.1oz_x000D_ Process: Sintering _x000D_ Outer diameter: 125mm/4.9inch_x000D_ Bore diameter: 32mm/1.3inch_x000D_ _x000D_ Package List:_x000D_ 1 * Diamond Wheel_x000D_ _x000D_ Note:_x000D_ Please allow slight error due to manual measurement. Thanks for your understanding. 1Made of high quality material, wear resistance, long service life. 2Designed to grind carbide and hard steel, stone, metal and other processing and polishing. 3High grinding efficiency, smooth, unbroken edges, will not produce tremor. 4Mainly used in alloy knife, saw blade, saw tooth processing and grinding. 5Can processing tungsten steel, quenching processing steel, special hard brittle materials grinding.