Steel bristles, plated to prevent . Suitable for deburring, removing rust, cleaning surfaces... For metal polishing, grinding, rust and non-metallic materials, polishing, grinding Fitted with 10 Adaptor Rings, for better work. Flat design, more easy to use. quality assurance Total Diameter: 200mm Hole Diameter: 32mm Thickness: 25mm Adaptor Rings: 10pcs (2x 1 inch/26mm, 2x 7/8 inch/22mm, 2x 3/4 inch/19mm, 2x 5/8 inch/16mm, 2x 1/2 inch/13mm) Material: steel Color: gold + red + black Package Included: 1 x 8 inch Steel Wire Wheel Brush 10 x Adaptor Rings Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.