To be on the safe side, you should secure your bike to a fixed object. This way, a thief cannot simply lift your bike and carry it away to pick the lock later without being disturbed. The ideal security solution is the ULC 100 insert chain. With this chain, you can lock the frame lock and the chain with just 1 key. The chain fits into the AXA Imenso and Block XXL frame locks. The chain links are 5.5 mm thick and the hardened steel locking pin is 10 mm thick. It has a length of 100 cm and has a black polyester cover that protects the bike from scratches.safety descripti.