2 Pcs Turbo Row Diamond Grinding Cup Wheel Concrete Turbo Cup Disc Grinder for Sand of Concrete Walls, Concrete Floors, Granite Stone Marble Masonry Specifications: Size: approx.4 x 4 x 0.15 inch (100 x 100 x 4 mm) Material: metal alloy Color: yellow Package includes: 2 x Turbo row diamond grinding cup wheels 4-Inch Concrete Turbo Diamond Large grinding segments with heat treated cup design.use long life. Use dry/wet to smooth concrete or field stone. A good helper for construction industries and home decoration. The cup wheels use only impact- and temperature-resistant diamonds, perfectly combined with wear-resistant metal bonding agents. You can safely use diamond cup grinding wheels for concrete, concrete products, granite, natural stone, stone and masonry. Note: Be sure to wear hearing protection, a dust mask, goggles and protective clothing before using the angle grinder High-Grade Diamond This diamond grinding disc is made of high quality metal alloy, with shockproof, high temperature resistance, strong and durable 6 Hole Dust Extraction When used with a vacuum, the grinding wheel provides the optimal and necessary combination of permissible airflow and chip removal. 12 Diamond Segments Concrete grinding wheel with 12 diamond segments designed to optimize smooth and efficient material removal Accessories The Concrete Grinding Wheelwith the adapter "ring" to neck it down to fit on a 16mm (5/8") arbor The diamond grinding wheel is perfect for use on grinding on marble, tile, concrete and rock.