HEFTY anSTRONG CUT RESISTANT: Our bike lock is made of unbreakable 3T manganese steel,10mm diameter square-linked chain, strong and tough, can withstand TOTALLY 6KN tension and 13KN shear force providing maximum cut resistance and much safer than most of other chain lock in the market. SCRATCH-PROOF COVER and FRIENDLY SIZE: The chain lock is wrapped by a water-resistant nylon sleeve, which is scratch-proof and wear-resistant, protects chain from scratching your property. STOUT U LOCK and 4 ERGONOMIC KEYS: Our chain lock comes with 1 sturdy U lock made of 16mm hard zinc alloy shackle and thick PVC coating, strong resists cutting and leverage attacks, ensures your motorcycle safety. 4 ergonomic keys are made of hard and durable stainless steel, never bent or twist. Anti-theft lock cylinder design, please insert the key all the way, otherwise it would be stuck or fail to unlock. WIDELY APPLICATION: This motorcycle lock is long enough to lock 2 to 3 motorcycles together, also ideal for locking lawnmowers, sports equipment, tool boxes, motorcycle & scooter, skateboards, gates, fences, grills, ladders etc. A great gift to friends, families, or students who needs it. CUSTOMER SERVICE: 24 hours online customer service. If you are not satisfied, please feel free to contact us. We will provide you with corresponding solutions HEFTY and STRONG CUT RESISTANT: Our bike lock is made of unbreakable 3T manganese steel,10mm diameter square-linked chain, strong and tough, can withstand TOTALLY 6KN tension and 13KN shear force providing maximum cut resistance and much safer than most of other chain lock in the market.