Wera 9532 Chain Riveter Set. This 18-piece bike workshop tool set includes a Zyklop Mini bit ratchet a bitholding screwdriver and 89 mm and 25 mm bits for hex TORX and Phillips screws. It features a chain riveter and fastener with an exchangeable rivet pin for opening and closing single-speed to 12-speed chains and a chain lock tool for easy handling of chain locks.