Thule Snug Tite Lock Designed for use with Thule T2, Thule Doubletrack, Thule Vertex, Thule Roadway and Thule Parkway Contains an anti-wobble feature and locking security Integrated dust cover keeps lock clean Replacement cylinders and keys, sold separately on Thule.com Includes both locking key and changing key Helps ensure your valuable bicycles stay safe and secure