Uxcell a15090400ux0720 100mm x 35mm x 20mm 80 Grit Alundum Flaring Cup Grinding Wheel Red, Main material: Alundum; Package Content: 1 x cup grinding wheel Product Name: cup grinding wheel; weight: 241G Granularity: 80 grit Main Color: red Overall size: 100 x 35 x 20mm/ 4" x 1.4" x 0.8"(Od*h*bore)