A high security chain for your bike ebike or motorbike. Features: 12mm six-sided chain links made of 3T hardened manganese steel for maximum strength Cinch loop for effective lock-ups using less chain Offers nearly the same “in-use” length as a traditional 5.5’ chain which means less bulk to carry Durable protective nylon cover with hook-n-loop fasteners to hold in place Includes Evolution series 4 disc lock with 14mm max-performance steel shackle Higher security disc-style cylinder with reinforced anti-drill anti-pull protection system Patented* oval hardened steel crossbar for extra security Hardened double deadbolt locking for extensive holding power Sliding dustcover protects and extends cylinder life 3 stainless steel keys – one lighted with high intensity bulb and replaceable battery Key Safe Program Product dimensions: 130cm chain length x 14mm shackle diameter Product weight: 4.79 kgs Patent D564339