Roll - N - Lock(R) QwikRak(TM) makes your truck even more versatile and functional A universal rack system that works with any aftermarket carrier system, QwikRak makes the space above your Roll - N - Lock tonneau cover usable. It carries your kayak, bikes, ladders or tools, freeing up your truck bed for other gear. The rails are adjustable and lock into place using an Allen key, ensuring your gear is secure at all times. Qwikrak are corrosion resistant, easy to install and remove and require minimal maintenance. Made in the USA and backed by a 3 - year limited warranty.