12 Pack ¼" Shank Flap Wheels in Assorted Grits, Includes 40, 60, 80, and 120 Grit Aluminum Oxide Sandpaper - 2"×1"×¼" Fits All Drill Chucks12 Piece 2"1"" mounted flap wheel set includes 3 of each of the following grits: 40, 60, 80, and 120 Grit Each wheel has a " shank that fits all drill chucks, can also be attached to most grinders, handheld rotary tools, or impact wrenches (maximum speed: 15,300 RPM) Flap wheels conform to the shape of the material that you are working on, making them excellent for complex shapes and contoured workpieces. During use, the sheets constantly expose fresh