6" Diameter 36 Ply Razor Edge Buffing Wheel (Untreated) or knife edge buffing wheel. Leather center. Mounts on a tapered spindle or mandrel. A wheel buff for use on a tapered spindle. This little buff quickly becomes the handiest thing in the shop. It's tapered form and razor thin edge gets into many places no other buff can get. Fitted with the patented leather center to keep it rigid on the taper spindle. Available in firm mill treated or soft untreated cloth. Diameters range from 2-1/2" to 6".