DeWalt DW4930 High Performance Carbon Wire Wheel, 5/8" - 11 Arbor, 4" DiameterFeaturing high tensile, heat treated carbon wire, DEWALT HP 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. Arbor: 5 8" 11 Diameter: 4" Material: Carbon Material Application: Ferrous Metal Max RPM: 20000 High tensile, heat treated carbon wire