Lightweight chain security for everyday convenience, the Keeper 585 chain is designed for basic protection in low risk environments. With 5mm steel chain links and an integrated lock, it offers simple deterrence for short stops. Product Highlights • 5mm steel chain construction • Integrated locking mechanism • Lightweight, easy to handle design • Nylon sleeve to help protect frame finishes • 2 keys included • Key Safe Program • Lifetime Warranty About the Brand Over 50 years ago, Kryptonite began with a mission. While much has changed in bicycling, and bicycle security, our objective remains the same, we are here to empower you to protect what you value. Through constant innovation, expert guidance, and our never-ending commitment, Kryptonite will continue to pursue our passion and do everything we can to ensure you can go where you want, when you want by offering smart, serious security solutions.