Oxford's strongest-ever lock with an integral alarm. The Oxford Products Boss Alarm lock has a key replacement service. It has been independently approved by Sold Secure Powered Cycle (Motorcycle) GOLD, SBSC Intygad Produkt, ART 4074 (14mm version), ART 4075 (16mm version), and ART 4076 (chain lock). The padlock features a 14mm hardened steel shackle, and the chain has 12mm hardened steel links. It offers a removable, sealed unit alarm module that is water, vibration, frost and heat-proof. It includes batteries (6 x LR44) and a 100db alarm. It can be used as a disc lock or a padlock. It comes with a minder cable, and reliability is assured by 5-year life-cycle testing (by Thatcham Research). Comes with three keys.