The OnGuard Beast chain lock is a...beast. Titanium enforced steel chain links provide tough protection against sawing and cutting style attacks. The X2P Dual Lock Down mechanism secures both side of the shackle for extra protection. This is a very strong bike lock for when you need to leave your pride and joy in a public place. The Z-Cylinder is bump proof and designed to resist against picking, pulling and drilling. A durable cover makes sure you dont scratch your paintwork and 5 keys mean you have plenty of spares. One of these keys comes with an LED light for easy nighttime locking. FeaturesChain - 110cm X 12mm With CoverTitanium Enforced Hexagonal Steel Chain LinksX2p Dual Lock Down Mechanism Secures Both Sides Of ShackleZ-Cylinder Is Bump Proof Resists Picking, Pulling Or DrillingDurable Chain Cover Prevents Stretching5 Laser Cut Keys ( Inc Micro Light Key)