Introducing the squire stronghold high security padlock with 145mm x 1200mm high security chain this is one tough couple this extremely high security lock and chain are designed for securing motor cycles originally however if you can lock a motor bike with a lock and chain why cant you use the same lock and chain on a bike the burly 14mm diameter hardened boron alloy steel chain is half the reason why this chain and lock is gold sold secure rated the padlock supplied is a 65mm solid harde