●Sturdy Aluminum Construction - Our ladders are made of lightweight aluminum, which is wear-resistant, impact-resistant, not easily bent, and not easily deformed. It can be used normally under various harsh weather conditions and has stable and long-lasting performance. Ladder diameter: 1 inch. ●Oxidized Surface - The oxidation treatment on the surface of the ladder effectively isolates air and moisture, and has a better anti-rust function. Effectively extend the use time of the ladder. ●Friendly Design - The total length of our ladder is about 117-1/8 inch. You can modify the ladder to 92.5" by cutting the middle part to fit more RVs. The ladder tread adopts anti-slip design, making it safer. ●Strong Support - The ladder will provide you with stronger support and will not shake. Gives you easier access to the top of your RV without permanently taking up valuable floor space. ●Packaged and Installation - 1 set of ladders, comes with all hardware and mounts needed for installation. Instructions included in the package. Bolt-on, professional installation highly recommended.