Hannibal ring binder: black: 17-ring: 19 mm O-mechanism: spine 34 mm: Multo Classic ring binder with a leather-look print. Made of timeless, high-quality material. The folder is washable and very durable. The mechanism is riveted invisibly and has 17 rings with a diameter of 19 mm. Each folder has a pocket. These Multomaps come in packs of 10 in black, blue or assorted (5 x black, 5 x blue).