You can count on the ABUS Chain Lock 8900. After all, this modelâ€s textile sleeve hides an 8mm square chain. ABUS manufactures both the chain itself and the structural parts of the locking mechanism out of specially hardened steel to create a robust overall product.An important part of the ABUS Chain Lock 8900 is also its extremely high-quality locking cylinder, which is secured against tampering such as lock-picking. This cylinder includes two reversible keys which make operation very user-friendly. In situations with an average risk of theft , the ABUS Chain Lock 8900 is a great way to secure your bike.• 8 mm square chain with textile sleeve to prevent damage to the paintwork• The chain, the lock body and supporting elements of the locking mechanism are made of specially hardened steel• High-quality locking cylinder with user-friendly reversible key for maximum protection against tampering, e.g. lock-picking• Two keys are supplied in the scope of delivery