The Scarab five-head hand grinder with stand-up handle can be used on concrete, stone, terrazzo, hardwood, and metal surfaces. Easy to use with standard 3-in. polishing pads, sandpaper, diamond abrasives, or PCDS for tough coating removal, the grinder can be used wet or dry. Grind stairs, countertops, floors, wall, ledges, and tough-to-get-at areas. Connect to any vacuum for dust-free applications. WerkMaster. 866-373-9375.