Running Boards with Two Stairs Design All-Steel Build, Bolt-on Side Steps Compatible with 2018-2026 W3611P453317This product features a 76mm diameter hexagonal design with a 3 inch root canal diameter. The thicker walls and one piece molding eliminate welding defects, resulting in greater load bearing capacity and higher overall strength. Welded brackets provide extra strength, package includes 2 Reinforcement Bars, a set of brackets and hardware; a DIY installation instruction booklet, no cutting or drilling required, installation can be completed in 20