APPLICATION- The Wire Cup Brush is specially designed for use with rotary tool or power tools and is used in metal processing, decoration, construction and manufacturing industries to perform multi-angle rust removal, paint removal, deburring, paint removal, dirt cleaning, and polishing.ABOUT THIS PRODUCTS- The coarse crimped wire cup brush for grinder is made from carbon steel wire to ensure long-lasting performance as well as rust and corrosion resistance, and is coated with two reinforcement plates for better wire retention.SPECIFICATIONOuter Diameter: 4 inchStandard Threaded Arbor: 5/8"-11Rotating Speed: 12500 MAX RPMCrimped Wire Thickness: 0.3mm/0.12 InchHeight: 67mmPackage: 1 packs of Wire Cup BrushTAKE NOTICE OF/TIPS- For best results, apply gentle vertical pressure to ensure full contact between line and surface for optimal performance.