·STRONG CUT RESISTANT -- Our bike security heavy-duty lock is made up of solid manganese steel, 8mm diameter thick square-linked chain is strong and tough, can withstand 6KN tension and 13KN shear force providing maximum cut resistance and more safe. What’s more, the bicycle lock designed with anti-drilling lock core to make your bikes more secure

·EXTREME DUAL PROTECTION -- 1. Protective cloth sleeve: The chain lock is wrapped by a non-slip nylon sleeve, which is wear-resistant and scratch-proof. 2.Dust Cover: The inner dust covering on the lock effectively prevents dust and water from entering, provide a nice protection of the lock cylinder

·SECURITY CHAIN LOCK -- This motorcycle lock come with 2 serpentine groove pattern design keys, made of hard and durable stainless steel, not easy to be imitated and stolen, ensures your equipments safety

·MULTIFUNCTIONAL -- ROCKBROS bike chain lock is 3.18ft / 97cm length, which is ideal for bicycles, ebikes, motorcycles, lawn mowers, sports equipment, garages, farms, tool boxes, electric cars, shops, glass doors and trolleys, etc