ST = standard, with plain steel bristles Ø 0,35 mm
6 x 7 / 8 x 9 / 10 x 11 / 12 x 13 / 14 x 15 / 16...
6 / 8 / 10 / 11 / 12 / 13 / 14 / 15 / 16 / 17 / 1...
6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 / 16...
