Uniting security with urban design, Kryptonite’s New York Chain Lock offers reliable security. The hardened steel is resistant to cutting attempts while maintaining mobility for everyday use. Product Highlights 12mm six-sided, chain links made of 3T hardened manganese steel for maximum strength 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 Patented*, oval hardened steel crossbar for extra security Hardened double deadbolt locking for extensive holding power High security disc-style cylinder with reinforced anti-drill, anti-pull protection system Sliding dustcover protects and extends cylinder life 3 stainless steel keys Lifetime Warranty Key Safe Program Optional ATPO Program: added peace of mind through financial reimbursement in the rare event of theft due to lock failure or forced entry About Kryptonite Over 50 years ago, Krypt