Garmin Zumo Lock Kradellock is the most innovative locking device of its kind and is manufactured and assembled in America. Made from aircraft grade billet aluminum with stainless steel locking and guide pins. Durable black anodized finish. Installs between your GPS cradle and the mounting surface on your bike. Kradellock works with the zumo 350/390, 590/595 and the 660/665. When you purchase your Kradellock, it comes with hardware to work with all of the zumo models listed above. Kradellock uses a miniature push pin lock and comes with two keys. There are over 100 key combinations available. Using your Kradellock is easy – Simply insert your GPS into its cradle, hold down on the top of the Kradellock and push in on the lock pin. The only time you need your key is when you want to remove your GPS from your bike. The ZUMO GPS devices and the Garmin plastic cradles shown throughout this web site are original Garmin parts, and are not supplied with the Kradellock.