This brush is perfect for surface preparation such as deburring, polishing, and removing scale, rust, corrosion, weld scale . cup brush,Heavy-duty cleaning of large metal surfaces.weld scale and corrodion removal,cleaning prior to welding.Rust pain removal,cleaning ships,steel tanks ks,Etc.Special Features:Diameter:65mmNut size:M1x2Wire diameters:0.30,0.35 and 0.50mmRPM:12,500Steel wire type: ...