Features: Transforms Thule side frames (sold separately) into InLock mounting panels for use with the Thule Tour Rack Compatible with a wide variety of bags designed for the InLock system Simple slide-on design allows the fabric back panel of an InLock-compatible bag to click securely into place Includes two adapters to convert both side frames; also available as a set of two Easy release mechanism using a pull-tab that unlocks the bag for quick removal