Can be used with grinders, power tools and hydraulic tools This premium quality 2 row segmented is constructed to last. Diamond Cup design allows an aggressive approach and minimizes tendency to dig in to Material. Designed for dry grinding of concrete, stone, pavers, curbs, granite, marble and other masonry materials,. Leaves a smooth finish to uneven surfaces. Designed for heavy removal capabilities. Diamond Cup wheels from Toolway are designed to be used for dry grinding of concrete and other masonry materials as well as to smooth uneven surfaces and remove flashing. These wheels are 4 1/2-Inch have a 7/8" bore and work at 7,500 RPM.