The Abus ACH 6Ks Frame Lock Adaptor Chain offers an effortless solution for enhancing your bicycle’s security. Made from hardened steel, this robust chain allows you to easily secure your bike to fixed objects without the need for an additional key or separate shackle locking. Simply loop the chain around a stationary item, insert the lock through the ring, and attach it to the lock housing. Compatible with various ABUS frame locks, this chain provides a reliable secondary security measure, ensuring your bicycle remains safe from unauthorized use.