Alpha Professional Tools® introduces the Segmented Grinding Cup Wheels. A diamond grinding cup wheel specifically designed for grinding and sanding applications on concrete, terrazzo and masonry products. This wheel is available in two arbor sizes: 26mm square arbor grinding wheel designed to be used with our patent pending spring loaded flange assembly, and a 7/8” arbor for endusers who want to run a different grinding wheel n their Ecogrinder with our manual height adjustment flange assembly. When used with the Alpha® Ecogrinder, this grinding wheel is ideal for surface preparation after removal of floor covering materials such as ceramic tiles, as well as smoothing the underside of concrete countertops.