For RVs and vans. Fits both standard 1-7/8" diameter ladders* (adapters included). Securely holds four or more chairs (depending on chair style). Glass-filled nylon construction with UV protectants and zinc-plated hardware. Swings outward for easy ladder access and swings inward for travel when not in use. Will not rust or corrode. Comes with an allen wrench and adjustable strap to stabilize chairs when traveling. Black. *Does not fit square tube ladders.