Secure your bike with the Magnum Industries OnGuard U Lock, with 2 Keys, and a Quick Release Mounting Bracket #4616. This high-security bike lock is designed with a durable key mechanism that ensures only you have access to your bike. The lock is made from a combination of plastic, metal, and steel materials, making it a sturdy and reliable choice for your bike. The OnGuard U Lock is easy to install and comes with a quick-release mounting bracket, making it simple to use and transport. The lock is compatible with all types of bikes and has a height of 7.87 inches, a width of 4.17 inches, and weighs 3 lb. The lock is manufactured in 2015 and comes with an unknown manufacturer warranty. Get your hands on this top-of-the-line bike lock and keep your bike safe and secure wherever you go.