Yakima TimerLine Towers Description: Yakima TimberLine Towers attach to vehicles that have a factory rack with raised side rails. Extend the cargo and gear carrying capacity for any adventure. Note: Yakima Bars are vehicle specific and will be needed for installation. (sold separately) Features: Set of 4 Towers Strong stainless steel strap accommodates a wide range of rail diameters Easily locks to the vehicle with Yakima's SKS system (sold separately) RoundBar SL Adapter required if using Yakima's RoundBar (sold separately) HD Bar SL Adapter required if using Yakima's HD Bar (sold separately) 220 lbs maximum load limit, depending on vehicle roof load limit