Proxxon 28778 rotary tool polishing supply

Aluminum-Oxide Mounted Points Inverted Cone Bit made from high quality base materials of consistent hardness. Various shapes for widest possible range of applications. Use on especially hard materials such as cast iron, unhardened steels, non-ferrous metals, hard metal alloys, welded joints, rivets and rust. Ideal for sharpening, deburring and general purpose grinding. Accurately dimensioned shanks 3/32" (2.35mm) or 7/64" (3.0 mm) for highest concentricity.
Size 9/32" Pack of 5