Turn your Dremel rotary tool into a simple to use rotary grinder. 952 aluminum oxide grinding stone features a high quality industrial abrasive that's perfect for extended general purpose grinding on metals, castings, welded joints, rivets and rust. 1/8 inch shank. Ideal for sharpening, deburring, and general purpose grindingSpecially designed for working with conic surfacesUsed on most metals1/8 in. shank3/4 in.