Features:Aluminum Oxide flap wheel for deburring and blending of flat and contoured surfaces，Cleans burrs and threads， for ferrous and non-ferrous metals.Handy set of super-versatile sanding flap wheels for Dremel and other power rotary tools.Grit:80#.Shank diameter: Approx. 3mm/0.12".Head diameter: Approx. 30mm/1.25".Head thickness: Approx: 11.2mm/0.44".Note: NO Retail Box. Packed Safely in Bubble Bag.Package list:10pcs Flap Wheel Sanding Disc