- Stable 4-ring mechanism, capacity: approx. 40 filled cases (black or white), approx. 60 clear cases or 50 bow cases, 7 ribs in the back with 2 golden stripes each, external format of the binder: 37.7 x 40.3 x 6 cm, including matching protective cassette, external format cassette: 38.7 x 40.5 x 7 cm, suitable for all MAXIMUM cases