Thule 5401 is a dedicated fully locking ski and snowboard carrier designed for vehicles with factory installed side rails only • No crossbars needed • Carries up to 6 pairs of skis or 4 snowboards - mix and match • Thule Lock Cylinders included with the Thule 5401 SnowCat • Telescoping steel bar adjusts to the width of your vehicle for a precise fit and optimum support • Rubber arms grip and hold skis and boards securely without scratching the surfaces • Integrated push button for easier operation • 4 One-Key™ Locks included to secure carrier