Foredom Aluminum Oxide Sanding Band, Assortment Package, 6 of each grit: 60, 80, 120, 180, 240, 320, 600. 1/2 " Dia., 1/2 " Long, Foredom AK-4680. Use with mandrels 10771 (A-SD328) or 10768 (A-SD188). Mandrel NOT included, but is required, Made in USA. 40,000 RPM Max Speed. 3M's Aluminum Oxide Abrasives are made of high-grade mineral and a bonding system that reduces shelling of the mineral. These economical abrasives are excellent for fast clean-up and pre-polishing work. Use the Sanding Bands with 3/32" (2.35mm) and 1/8" shank rubber drum mandrels. To install, slip band onto rubber drum with screw loose. When band is in position, tighten the screw, which expands the rubber drum, for a secure hold.
*Optimum Operating Speeds are much lower (between 25% - 50% of maximum speeds) and also depend on the type of workpiece.