Dremel 503 3/8" Flapwheel 120 Grit Turn your Dremel rotary tool into a versatile sanding machine with the 503 3/8 In. (9.5 mm) 120 Grit Flapwheel. Flapwheels work well for gentle paint or rust removal, light material clean up, and polishing flat or contoured surfaces. They're effective as a finishing sander after heavier surface sanding and material removal is completed. FEATURES: Flapwheels grind and polish flat or contoured surfaces Effective as finishing sander after heavy -surface sanding and material removal is complete 1/8 In. mandrel 120 grit for fine finish sanding SPECIFICATIONS: Bit Diameter Inch: 3/8" Bit Diameter mm: 9.5 mm Grit: 120 Overall Length in: 2.75 Recommended Speeds: Wood (25,000-30,000 RPM) Soft Metal (20,000-25,000 RPM) Hard metal (25,000-30,000 RPM) Plastic (10,000-20,000 RPM) Soft Stone/Shell (10,000-25,000 RPM) Shank Diameter in: 0.125