The OnGuard Mastiff chain combi lock is a flexible and versatile bike lock to keep your pride and joy secure in public. Titanium reinforced steel chain links are strong against sawing and cutting attacks, as well as bolt cutters. A user settable combination gives the OnGuard Mastiff bike lock up to 10,000 variations to deter opportunistic code breakers. You also dont need to worry about losing keys or forgetting your keys. To protect your bike frame from scratching there is a durable chain cover. Key Features: Chain 80cm x 8mm With CoverTitanium Reinforced Square Steel Chain LinksSteel Ball Click Combo Gear SystemUser Settable Combination With 10 000 VariationsDurable Chain Cover Prevents Scratching80cm X 8mm