converging
SUPREMA Brushes, 2 rows, plastic center (KK) - converging
Circular brushes, 2 rows, converging, different center diameters and different total diameters.
2/28/55 mm SKs
RSK 22 100
Suprema brushes, black bristles, converging, plastic center, 2-rows Ø 28/55 mm (PU=6)