The Pro Tectic 4960 Chain provides an additional layer of security when using the Pro Tectic frame lock (sold separately).
ABUS "push n' lock" technology makes using this accessory chain a snap. No separate closing of the shackle is necessary and allows the bike to be secured to a fixed object.
This square chain frame lock from ABUS makes it particularly easy for you to secure your bicycle twice: Simply place the chain around a solid object, pull the chain end with the lock through the ring on the chain, and then insert it into the lock case. You do not need another key and a separate locking of the shackle is not necessary either.