Lessmann LES437162 Cup Brush with Shank D70mm x H25 0.30 Steel Wire The Lessmann Cup Brush is fitted with 6mm shank and is ideal for working on medium to large areas. They are generally used for the removal of rust paint dirt or scale and for polishing. Diameter.70mm. Width. 15mm. Wire Height. 25mm. Wire Gauge.0.30. Wire Type. Steel. Max. R. P. M. 4,500