This Swivl-Eze 278 Air System Mount With Slider is a versatile boat seat mount with adjustability to put a boater in the most comfortable seated position. This is an adjustable seat mount with a slider and 3-degree tilt. It has a short slider handle that easily adjusts the pedestal's position. This mount is part of the Swivl-Eze 278 Series of seating-related products, and it works with posts with a 2 7/8-inch diameter post. It meets ABYC Code AO standards. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing of the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.