ITEM NAME:Disc Plate Wheel Grinding Wheel Diamond grinder 100mm Grinding Surfacing Co I6I2 Disc Plate Wheel Grinding Wheel Diamond grinder 100mm Grinding Surfacing Co I6I2 Size(diameter): 4 inch/100mm Inner hole diameter: 27mm (without metal ring) Inner hole diameter: 17mm (with metal ring) Net weight: about 190g each Thickness of diamond segment: 7mm Material: metal + alloy High speed of grinding , long service life. Utilization : Diamond millstone generally applicable to the grinding of marble, granite, ceramic, artificial stone and glass, etc. especially suitable for the building decorated with concrete walll,marble floor, grinding edge of granite plate, chamfering and arc grinding. Package include: 1 x Diamond Grinding wheel Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.