The Big Boss super strong disc lock from Oxford is a universal lock suitable for use with all motorcycles of varying sizes and types. Endorsed by Thatcham Vehicle Security, the Big Boss super strong lock attaches to your motorcycle brake discs which in turn will prevent the wheel being turned. This means that potential thieves won't be able to ride or push away your motorcycle. Featuring hardened steel armour casing to resist tampering and a unique double locking system with hardened 16mm shackle that will deter even the most persistent thief. The Big Boss disc lock can also be used as a padlock when used with a 1.2, 1.5 or 2.0m chain (not included). The Thatcham Institute for Vehicle Security is recognised by insurers as the UK’s leading tester of vehicle security products. Products with the Thatcham label have been demonstrated to comply with The British Insurance Industry’s Criteria for Vehicle Security - the toughest set of standards ever to be applied to motorcycle locks and alarm/immobilisers. As a result, many insurance companies offer significant discounts to those who use these Thatcham Approved Products.