* Type 1 Wheel Grinder, for cleaning metal, grinding and smoothing weld seams, removing imperfections before painting.* 3" Diameter, Straight Line, 1 hp, 6" Extension, 18,000 RPM.* Accepts optional 3" diameter Type 1 Wheel, with 3/8" center hole (maximum wheel width of 1/2"). Governor-controlled motor maintains RPM under heavy load; rear exhaust.* Safety-lock lever is included on all models.* Standard cushioned grip enhances operator comfort and control.