About the Kryptonite Kryptolok Series 2 955 The Kryptonite Kryptolok Series 2 995 Lock with Integrated Chain include 9mm four-sided chain links made from triple heat-treated boron manganese steel. The chain secures with a new patent-pending Integrated Kryptolok series 2 Lock head boasting a talon deadbolt. It has a high security disc-style cylinder which is pick and drill resistant. There is no weak link because the innovative chain is a new patent-pending pin-less link design. Chains are enclosed in a nylon-webbing sleeve to protect paint from scratches and allow for compact coiling while transporting. Key Features 9mm four-sided chain links made from 3t manganese steel Critical vulnerabilities are eliminated using a patent-pending end link design to secure the chain to a hardened deadbolt providing additional protection Includes 2 new ergonomic \\\"I\\\" keys Durable weather-resistant nylon sleeve prevents scratches Key safe program About the Brand Over 40 years ago, Kryptonite began with a mission. While much has changed in bicycling, and bicycle security, Kryptonite\\\'s objective remains the same, they are here to empower you to protect what you value. Through constant innovation, expert guidance, and Kryptonite\\\'s never-ending commitment, they continue to pursue their passion and do everything they can to ensure you can go where you want, when you want by offering smart, serious security solutions. In 1989, an unusually high number of Anti-Theft Protection claims in central New York City, forced Kryptonite to stop offering protection there until 1994. The New York Lock was introduced in 1994 and became a flagship lock for the company. By 2013 Kryptonite became part of Allegion PLC through the spinoff of Allegion from Ingersoll-Rand. This separation allows Allegion to focus solely on commercial and residential security businesses. Bicycle Locks Buying Guide