3pcs Mandrel Set with 1/8" (3mm) Shank and Screw Fits Dremel And Most Rotary Tools 3pcs Mandrel Set with 1/8" (3mm) Shank and Screw Will fit most rotary tools Shank Length: 22mm Total Length: 42mm Use With Cut-Off wheels, Sanding Discs and Polishing Wheels