OCV3291 Features: Spindle mount for quick attachment Diameter: 4 in Speed: 8000 rpm [Max] Roughness Grade: Extra Coarse Shank Diam: 1/4 in Abrasive Material: Silicon Carbide Mounting: Spindle Used With: Die Grinder Applications: Cleans Welds, Other Clogging Materials, Removal of: Rust, Scaling, Oxidation, Paints Applicable Materials: Alum...