This 1358mm/53.5'' long full-size Slimline II cargo roof rack kit contains the Slimline II Tray, Wind Deflector and 2 pairs of Rail Grip Feet to mount the Slimline II Tray to the roof rails of your Buick Encore. This system installs easilyoff-road tough with feet that grip onto the existing factory/OEM roof rails. No drilling required.