Ideal for sharpening, deburring and general purpose grinding on most materials. The versatile 1 In. (25.4 mm) diameter Aluminum Oxide Grinding Stone works well for extended general purpose grinding on metals, sharpening tools, castings, welded joints, rivets and rust removal. The 8215 Grinding Stone is disc shaped; however, Dremel offers a variety of grinding stones with different bit shapes to support virtually every possible grinding application.

From the Manufacturer

A high-quality industrial abrasive made for extended usage, 1/8 (3,2mm) shank. Ideal for sharpening, deburring and general purpose grinding on most materials — including stainless steel. Specially designed to working with flat and slotted surfaces.