IVY Classic 39121 Spiral Stitched 6-Inch Cotton Muslin Buffing Wheel With 1/2-Inch Arbor, 1/Card Buffs and polishes wood and metal Concentrically stitched cotton muslin for long life- 40 ply Fits 6-inch Bench Grinder. Use IVY Classic Arbor Adapter 39093 to adapt buffing wheel to fit drill Arbor: 1/2-inch, Pile Height: 1/2-inch - 1-inch Max RPM: 4500