Check the listing for details. 4 inch Diamond Segment Grinding Wheel Disc Grinder Cup Concrete Stone Cut 4" USA. Color: Golden, Condition: New. Listed at 14.79 USD. Features High grinding speed, long service life. Generally applicable to the grinding of marble, granite, ceramic, artificial stone and glass, etc. Suitable for the building decorated with concrete wall,marble floor. Suitable for grinding edge of granite plate, chamfering and arc grinding. Can use for DIY grinding and polishing wood, metal and mold. Used on high-speed electric grinder and pneumatic tools. Specifications Material: HHS Production process: sintering Color: Golden Applications: Suitable for grind on marble,tile, concrete,rock, etc.. Size：4" ×0.6"(100*20MM) Inner hole diameter: 20mm/0.79 inch (without metal ring) Inner hole diameter: 16mm/0.63 inch (with metal ring) Package included 1 x 4inch Segment Grinding Wheel