10mm six-sided chain links made of 3T manganese steel Patent pending end link design secures chain to hardened deadbolt Patented, reinforced oval crossbar lockhead High security disc-style cylinder is pick and drill resistant Sliding dustcover protects and extends cylinder life Durable, weather resistant nylon sleeve prevents scratches 3 stainless steel keys plus Key Safe Program for replacement keys Lifetime warranty Anti-Theft Protection Offer: with a paid registration, registered owners can be reimbursed in the event of theft due to the opening or breaking of the lock by force In order to sell Kryptonite products online, dealers can complete the online seller application at [email protected] Model Evolution 1012 Diameter (mm) 10 Length (inches) 47.25 Lock Type Key Security Rating 8/10 Weight (lbs) 6.80 Color Black/Orange