Abus Ivera Steel-O-Flex 7200/85 Bicycle Cable Lock, 85cm/20mm 22mm overlapping hardened steel shells protect the inner steel cable Hydrophobic, flexible protective mesh sleeve Steel shells, case and supporting elements of the locking mechanism are made of temper hardened steel Chain, lock body and supporting elements all made of special temper hardened steel Industry leading corrosion resistance makes this lock incredibly durable.