These tough wire wheels are filled with curled, carbon steel wire. 0.012inch bristles are added to the strength of the wire. It has a reasonable bending design and also increases the number and thickness of bristles through automatic production process, which ensures the wire does not off quickly in the shortest possible time during the operation of the brush wheel, making it work more smoothly 7 wire wheels are available in different diameters, including 3in (75mm) x 1pc , 2.5in (65mm) x 1pc , 1. 9in (50mm) x 1pc , 1.5in (40mm) x 2pcs wire wheel brushes and 2in (50mm) x 1pc wire cup brush, 0.6in (16mm) x 1pc pencil type steel brush. The size is suitable for quick work in areas and the small size can be used for narrow spaces and fine work. The latest version of the inlay process technology ensures a embedding between the wire and the wheel, which can withstand high intensity work. The rotating wire wheel can withstand a high speed of 4500 , and the of carbon steel material effectively avoids the risk of breakage during work. Long-term use of the wheel brush will not appear asymmetry and deformation of the situation. This drill wire brush assembly is available in seven models for different scenarios such as rust/scale/paint removal, polishing wood crafts, finishing welds, and other light to medium strength metal surface treatments. For safety reasons, be to wear such as goggles, mask, protective gloves and protective clothing working. Cylindrical linkage rod in with mechanical engineering design, adaptability is stronger. The force surface is evenly distributed to reduce the friction force, using a new type of alloy carbon steel more durable and less likely to break. color:Silver Material:steel Package Contents: 1 set x wire wheel(7Pcs) Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.