... service Freet is a leader manufacoty of diamond tools in China. Mainly produce Diamond segment, saw blade, polishing pads,wire ... saw, core drill bits, profile wheel, grinding wheel.A>Double row diamond cup wheel for concrete Specification:Outer diameters: 4 ... , 5, 6, 7 inchesCup wheel includes single-, double-row and turboSuitable for fast grinding, rough deburring, smooth shaping ...