Experience reliable moderate security for your daily commutes and errands with the Kryptonite Keeper 12 Standard U-Lock. Engineered for durability, this lock features a 12mm hardened performance steel shackle designed to resist common cutting and leveraging attacks. The included 4-foot Kryptoflex double-looped cable offers additional versatility, making it easy to secure your front wheel or accessories alongside your frame. With its hardened double deadbolt design and anti-rotation technology, you gain superior protection against twist attacks. The disc-style cylinder ensures smooth and reliable operation in various conditions, while the included click-style transportation bracket allows for convenient, rattle-free mounting to your bicycle frame. Two ergonomic stainless steel keys are provided to ensure ease of use. This set is a dependable solution for cyclists who prioritize theft prevention and ease of transport. Product Summary: Kryptonite Keeper 12 U-Lock, 12mm hardened steel shackle, 4-foot double-looped cable, Silver Sold Secure rated, bicycle security lock system, anti-theft bike protection.