Available in three sizes, the Steel D Lock has been Sold Secure certified, making it one of LifeLine’s most trustworthy bike lock systems. The traditional D-shape of the lock is constructed from a 14mm toughened steel shackle that will hold as firm as possible under bolt-cutter attacks while keeping your bike firmly tethered to your chosen anchor. Coming complete with two reversible keys, the lock is safely secured in place and is protected by a dust/water cover, which also keeps your frame and paintwork free from scrapes and buffs. It is also easily transported in your kitbag or via the included frame mounting bracket, making for an all-round convenient and dependable bike lock. * Note that the Large Steel D Lock is ‘Bronze’ Sold Secure Certified. The Small and Medium options are ‘Silver’ Sold Secure Certified.