The Adarack can increase the cargo capacity of your truck with it adjustable and removable uprights. Made of heavy corrosion resistant aluminum with uprights and rails that can support 500 lbs. The 1.5" cross bars come with 4 load dividers with other optional accessories that can go into the integrated mounting channels. The contoured uprights can be removed when not needed and move within the rails to adjust to different sized loads. This unique cargo system can also work with many style bed covers. No drill installation. Installation available at an additional $80 charge.