Features: Despite being lightweight, this marine pedestal base is also designed with the stability and safety of your seating, the lightweight feature is carefully designed to reduce the ship weight and improve boat performance. With our boat pedestal, your safety is assured, built from rugged materials with careful attention to detail, these pedestals and bases offer a reliable seating solution, giving you peace of mind the time you set sail. Specifications: Main material: aluminum alloy Main color: silver Size: Seat pedestal: approx. 7 x 7 inches Countersunk hole: approx. 0.37 inch Locking pin: approx. 0.75 inch Package includes: 4 x Boat seat pedestals Notes: Screws are not included. Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.