Featuring high tensile, heat treated carbon or stainless steel wire, DeWALT® High Performance™ wire wheels offer long-lasting, aggressive brushing action. an innovative internal holding plate construction provides helps to reduced knot movement and helps to increased control and brush life. delivers smooth performance, with crimped wire for flexibility. DeWALT® High Performance™ Wire Wheel Brush, 4 in Diameter Brush, 1/2 in Face Width, 5/8-11 Arbor Hole, Stringer Bead Filament/Wire, 0.02 in Dia Filament/Wire, Carbon Steel Fill, 1 in Trim Length, 20000 RPM Maximum