"The Elevate Outdoor pickup truck bed extender mounts to a 2"" Class III and IV hitch receiver, enabling pickup trucks greater cargo load versatility by transporting longer payloads such as lumber, pipes, plywood, decking, and more. The adjustable extension arm support accommodates cargo between 28.25"" to 48.75"" wide and is may be configured from 4"" to 10"" high to level the extender with the pickup truck bed. Extender length measures 53.5"" from the .5"" hitch pin hole, or 51.5"" from the 5/8"" pin hole. When used with a 2"" Class III or IV trailer hitch receiver, the hitch rack holds up to 750 pounds of distributed weight, from truck bed to arm extension. The extension arm alone will hold up to 375 pounds maximum. Made with heavy-duty steel construction for years of hauling. Hitch pin is sold separately. Please note: HitchRack also works with 1.25"" Class II hitch receivers with a separate conversion adapter. The 1.25"" hitch adapter is sold separately. When used in this configuration, the rack supports a maximum 300-pound distributed weight capacity or 150 pounds using the arm extension alone."