In-tool-home Abrasive Flap Wheel Sander 80 Grit 1/8" Shank Diameter 32mm 3/8" Thick and 1" Pack of 10 Use for grinding and polishing flat or contoured surfaces New abrasive is continuously exposed to prevent clogging and give a uniform finish Best as a finishing sander after heavier surface sanding and material removal is completed Great for removing rust Material: Emery Cloth,Metal,Outer Diameter: 32mm and 20mm