100mm 4" Diamond Grinding Wheel Concrete Cup Disc Concrete Masonry Stone Tool and Color RedThis Diamond Wheel generally applicable to the grinding of marble, ceramic, artificial stone and glass, especially suitable for the building decorated with concrete wall,marble floor, grinding of plate, chamfering and grinding.Feature：High speed of grinding , long service life.Can use for grinding and polishing wood, metal and mold.Used on high-speed electric grinder and pneumatic tools.Specifications：Size(diameter): 4 inch/100mmInner hole diameter: 22mm/0.87 inch (without metal Inner hole diameter: 16mm/0.63 inch (with metal Thickness of diamond segment: 5mm/0.20 inchQuantity:1PcNote:Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!!Package Including:1x Diamond Wheel