Features: Durable and practical Good polishing effect, high efficiency, low cost Suitable for metal surface cleaning, derusting, grinding, dusting, deburring, polishing, stripping residue Specifications: Material: Steel Wire Type: Wire Brush Wheel Color: Gold Diameter: 4" 100mm, 5'' 125mm, 6'' 150mm, 7" 175mm, 8'' 200mm, 10" 250mm Thickness: 18mm-22mm (Approx) Wire: 0.3mm (Approx) Max.R.P.M: 6.000 min﹣1 Suitable for machine polishing Package includes: *1pc wire brush *10pcs adaptor rings:  (2x 1″/26mm, 2x 7/8″/22mm, 2x 3/4″/19mm, 2x 5/8″/16mm, 2x 1/2″/13mm) Note: - Please allow minor errors due to manual measurement. Thanks for your understanding. - Monitors are not calibrated same, item colour displayed in photos may be showing slightly different from the real object. Please take the real one as standard.