The special shape of the bevel brush enables the user to work in hard to reach places. They have been designed for heavy-duty use, for the preparing of metal surfaces before painting, and the removal of slag, rust, scale, or concrete waste. Diameter: 100mm. Width: 10mm. Bore: M14. Wire Gauge: 0.35. Wire Type: Steel STA Crimped. Max. R.P.M.: 12,000.