Diamond cup wheel 1Type: 30/40,70/80,140/200 2,Diameter: 3'', ... cup wheel is specially engineered for quick remocal of material and leaves a smooth finish on hard stone. Sang Diamond Tools Co., Ltd, is ... as Marble, Granite, Concrete, Reinforced concrete, Asphalt, etc. Diamond Cup Wheel, Diamond Grinding Wheel, Grinding Cup Wheel, Abrasive Wheel