What is the difference between the security rating?

1.       Diamond locks: "provide the highest level of security ... aimed at very high value bicycles and e-bikes."

2.       Gold locks: "offer the next highest level of security, aimed at mid-to-high value bicycles."

3.       Silver locks: "offer a compromise between security and cost."

High Security boron steel chain, guaranteed impossible to bolt-crop by hand (select length below). Sold Secure Motorcycle Gold (and all other categories Gold). 9kg in the 2.0m length. The chain is supplied with usually bronze colour sleeving, and the chain itself is finished with either zinc plating or a black finish.

Noose chain option has a special oversize ring at one end of the chain (only), allowing a noose to be formed by looping the chain through that ring. This is helpful with longer lengths of chain, avoiding the normal need to make a big loop around all items - A noose can be formed at the ground anchor and a second loop formed with the lock at the other end of the chain.