Knot Cup Brush 65mm M14x2.0, 0.35 Steel Wire - Lessmann 482.213, Knot Cup Brushes are for heavy-duty use for the preparing of metal surfaces before painting, and the removal of slag, rust, scale or concrete waste.Lessmann knotted brushes are filled with a special steel wire of high tensile strength in order to meet the demands of this type of brush. Products marked with a * have a bridle fitted which an be removed to expose a further 20mm of useable wire.This Lessmann Knot Cup Brush has the following specification: Diameter: 65mmThread: M10 x 1.25Wire Gauge. 0.50Wire Type. SteelMax. R.P.M. 12,500 Lessmann 482.213 Knot Cup Brush 65mm M10x1.25, 0.50 Steel Wire