Bosch Wire Wheel Brush Steel Wire/Nylon Shank Ø 6mm - Bosch 2608622130, The wire wheel brushes from Bosch are supplied in sizes from 75 to 100mm and with either nylon, steel or brass coated wire.
They all have a 6mm shank.
Bosch 2608622130 Wire Wheel Brush Ø 80mm Brass Shank Ø 6mm