Hilti 4-1/2 in. x 5/8-11 in. Threaded Arbor SP Diamond Cup Wheel for Angle Grinders 2238560 - The Home Depot

The new Hilti Cordless 22-Volt burnishing machine with electronic speed control can be used for grinding and finishing stainless/carbon steel, aluminum, copper, brass and titanium. Precise speed control from 1220 RPM to 2750 RPM - you can use higher speeds to remove material very quickly, while the lower speeds help you to craft a perfect polished finish on stainless steel. Upgraded ergonomics with lock-on switch - this cordless burnisher fits firmly in your grip, for more comfortable handling and precise control. Use for rough grinding - efficiently removing welding seams, burrs, rust, coatings or tarnish on larger metal surfaces