This Is Dremel's Aluminum Oxide 3/16" Grinding Stone Accessory Bit.
A high-quality industrial abrasive made for extended usage.
Use on metals, castings, welded joints, rivets and rust.
Ideal for sharpening, deburring, cleaning and general purpose grinding of most materials--including stainless steel.
Specially designed for working with conic surfaces.
Remove rust from cars and bicycles.
Sharpen fishing lures.