Square chain with a thickness of 7 mm in a new, functional, very flexible package with a long lifespan. The lock cover provides high protection for the chain against wear and does not absorb any liquids, such as water or oil. The chain and the body of the lock, as well as the components of the locking mechanism, are made from specially hardened steel. The ABUS locking system features a double-sided key for more convenient locking. Two keys are included.