6.35mm x 12.7mm Drum Rubber Mandrel with 2.35mm Shank Rubber mandrels are used with sanding sleeves and are suitable for rotary tools. It is recommended to use 10 sandpaper bands with 1-2 rubber mandrels. Ideal accessories for sanding drums to sand, shape, groove, and finish hardwoods, fiberglass, etc. Installation: Push the rubber mandrel into the sanding drum and tighten the top screw. uxcell Drum Rubber Mandrel 6.35mm Sanding Sleeve 2.35mm Rotary Tool Z179 $$480 #ru-item