The Bike-It Mammoth Lock and Chain - 1.8m is designed for all securing needs, especially suited to secure a bike to a permanent fixing. It features a hardened steel lock body, a double bearing lock mechanism, and an 11mm hardened steel closed U-shackle. The chain is 1.8m in length and made of hardened steel. This lock and chain is bright green to act as a visual deterrent and has a sleeve around the chain to protect the bikes wheels and paintwork. It has also received a MCN Magazine 5 Star Value Rating.