Lessmann LES429177 Cup Brush 150mm M14 0.35 Steel Wire The Lessmann Cup Brushes are filled with crimped wire and are ideal for working on large surfaces. They can also be used for the removal of rust paint dirt or scale and for polishing. A range of sizes and wire styles are available. Diameter. 150mm. Wire Height. 50mm. Bore. M14. Wire Gauge.0.35. Wire Type. Steel. Max. R.P.M. 4,000.