MK Diamond 157493-MK Stone Polishing Hand Tool Kit Polisher operates on standard house current and is designed with an ergonomic sure-grip handle Wet polisher is ideal for handheld grinding and polishing of gemstones, rock materials, marble and granite This polisher/grinder easily attaches to a standard hose to enable a steady flow of water through a control valve to the workplace Kit includes GFCI switch, water hose, spanner wrenches, plastic carrying case, 4-Inch resin bond polishing disc set and 4-Inch rubber backer pad Polisher operates on standard house current and is designed with an ergonomic sure-grip handle Wet polisher is ideal for handheld grinding and polishing of gemstones, rock materials, marble and granite This polisher/grinder easily attaches to a standard hose to enable a steady flow of water through a control valve to the workplace Kit includes GFCI switch, water hose, spanner wrenches, plastic carrying case, 4-Inch resin bond polishing disc set and 4-Inch rubber backer pad MK Diamond field proven quality