Powerful 13 amp, 110V motor for demanding use when wet drilling in reinforced concrete, stone, asphalt, marble, ceramic, walls, floors and more;1800 - 4400 rpm load speed dial control - concrete drill with oil bath gear box and mechanical safety clutch for optimal lubrication, reduced heat and increased user safety;Machine integrated water supply with gardena style quick connect and adjustable valve for easy use with standard garden hose. GFCI over-current cut-off protection standard;Only 7 lbs., Collar Diameter 52mm collar for easy mounting, rig mounting kits available.;