All System One® ladder racks start with the Pick-up Trak® which is fastened to the inside lip of the bedrail. This track forms a structural foundation distributing the weight of the ladder rack and cargo while protecting the bedrail. Tool boxes, sliding cargo anchors and other accessories are easily mounted using standard 5/16" stainless steel carriage bolts in the recessed T-slots. Wide profile truss legs provide tremendous rigidity and reduce concentrated loading. System One's Ladder Life® anti-wear inserts are made of tough, EPDM rubber and are installed in each crossmember to eliminate dangerous ladder wear and reduce noise. Our Ladder Glide® low-friction insert, made from high density polyethylene, is installed on the rear edge of the rear crossmember for easy loading and unloading of ladders and material. Color inserts are included and come in 62 colors to match your truck or company color.