Dremel 3/8 In. Aluminum Oxide Grinding Stone, Pointed the highest industrial quality for extended general-purpose grinding and long abrasive life on metals, castings, welded joints, rivets, and rust. It is designed for use on most materials, including stainless steel, and is specially crafted for working with conic surfaces. Featuring a 1/8" shank diameter and a 3/8" bit diameter, this grinding stone ensures precision and durability for various grinding tasks. Whether you are smoothing rough edges or sharpening tools, this aluminum oxide grinding stone delivers reliable performance every time. Model Number: 932