Cargo Bed Gate For - Chevrolet - Colorado - 2004-2018 - (Fits under side rails) - Adjustable width 58.65 "-63"; height 17" No Tools are Needed. Holds Up to a 65-Pound Static Load. Works with Bed Liners and Bed Covers except for covers with a track system because they impede the side rail attachment. Made of Anodized Aluminum, HD Nylon Plastic and Stainless Steel Components. Limited Lifetime Warranty.