uxcell 75% 240 Grit Resin Bond Bowl Shape Diamond Grinding Wheel Grinder 100mm x 32mm Product Name : Diamond Grinding Wheel;Type : Bowl Shape;Main Material : Aluminum, Resin Abrasive Grain : RVD;Bonding Agent : S;Concentration : 75% Grit : 240;Outside Diameter : 100mm / 25/64";Mounting Hole Dia. : 20mm / 4/5" Rim Dimension : 10 x 4mm / 0.39" x 0.15" (W*T);Overall Depth : 32mm / 1.26";Color : Green, Silver Tone Net Weight : 243g;Package Content : 1 x Diamond Grinding Wheel