THE ANSWER TO PICKING & TAMPERINGThe high-quality “ Plus” cylinder of the Chain Lock Steel-O-Chain™ 9808 is the safest that ABUS currently offers. No matter if someone tries to pick the bike lock or the “ Plus” cylinder with special tools Â- they wonÂ’t get very far. The hidden “ Plus” cylinder is the safest disc cylinder currently used in ABUS products. Technology: 8 mm thick square chain The chain the lock body & supporting elements of the locking mechanism are made from specially hardened steel Automatic keyhole cover to prevent corrosion & the ingress of dirt ABUS Plus cylinder for high protection against manipulation attempts e.g. picking Operation & use: Good protection at medium theft risk Recommended for securing good bicycles The longer the chain the easier the bicycle can be locked to a fixed object