Grinding and polishing inside curves is easy is easy with this powerful work-bench tool. Featuring a powerful 1/2 HP industrial quality Baldor motor with ball bearings, wheels spin at speeds 1725 RPM making this tool ideal for production work. The one-inch mounting shaft, washers and nuts are all solid stainless steel and the wheel and belt guards are thick molded plastic to prevent rust and corrosion. The convenient two wheel design allows users to grind with one wheel and polish with the other, saving time and effort. Wheel guards can be removed in in less than a minute for quick and easy wheel changes.