Norton Gemini Bench and Pedestal Grinder Wheels are designed with quality, aluminum oxide for deburring and tool sharpening This bench grinder is a good choice for deburring and tool sharpening on bench and pedestal grinders with operating speeds up to 4965 RPM Versatile on multiple surfaces including stainless steel, hard and soft carbon steels, titanium, aluminum, brass and iron Sized as a 5 inch grinder wheel with a vitrified bond, this grinding wheel is designed to hold a superb shape and resistance to wear Wheel Type is 01 with a 5 inch diameter and Medium 60 Grit. Dimensions: 5 x 3/4 x 1 Inches. Comes as a pack of 1 grinding wheels