Features: Widely used in polishing, cleaning, deburring of steel, cast iron, stainless steel alloys, aluminum, ferrous metals, etc. Remove all surface coatings, protective paint, and varnish. Cleaning and maintenance of plant equipment to remove surface dirt and small lumps. Open structure: no clogging. The 6mm shank diameter fits most drills. Nylon has a high level of resistance to pulling and ripping. Specification:Material: Nylon FiberColor: Red Max RPM: 3000 RPMArbor Diameter: 6mm/Approx.1/4" Diameter: 50mm(2 inch)/70mm(2.76 inch)/100mm(4 inch)Quantity: 1pc Widely used in polishing, cleaning, deburring of steel, cast iron, stainless steel alloys, aluminum, ferrous metals, etc. Package Included:1Pc Sanding HeadNote:1. Please allow 1-5mm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!