Raizi 4" metal bond sintered diamond grinding wheel/disc with adapter

4" metal bond sintered diamond grinding wheel/disc with adapter Metal bond polishing pads with rubber backer pad are applied to quickly remove stock.  Metal-bond diamond polishing pads are designed to wet-polish all straight or contoured edges for granite, concrete and engineered stones. Metal powders are mixed with resin to provide a tighter bond to diamonds. They are more aggressive than traditional resin bond pads. While they last longer than resin bond pads on granite, they are the solution for engineered stones.Application: For grinding of granite, hard marble, concrete and terrazzo.   Specifications: Size: 4 inch Speed: max. 4500 Grit: #30, #60, #120 Thickness: 3.0mm Thread: M 14, 5/8"-11 Usage: wet Recommended speed Average: 3800rpm.Max. 45m/s. Application: granite, hard marble, concrete and terrazzo.