Description: 【Quality material】: Crafted from quality aluminum alloy, this boat seat pedestal base kit is designed to wear resistant and sturdy, ensuring it remains sturdy and resistant to deformation over long term use 【Sturdy design】: Engineered with a solid and stable structure, the marine base pedestal plate provides reliable support even in harsh outdoor environments, enhancing stability for your boating needs 【Versatile functionality】: Featuring a multifunctional design, the deck mounting parts are easy to install and replace. With 360 degree rotation and adjustable height features, they offer use friendly use 【Wide application】: This replacement support stand is ideal for various types of boats, including fishing boats, bass boats, boats, cruising boats, and pontoon boats, making it a versatile choice for different boating scenarios 【Practical accessory】: The boat seat pedestal base mount rack serves as a flexible accessory for replacement or outdoor activities, enhancing the functionality of your boat seating arrangements Specification: Material: Aluminum Alloy Size Chart: Base Plate: 17.5cmx17.5cmx6.5cm/6.89inchx6.89inchx2.56inch Base: 17.2cmx17.2cmx14cm/6.77inchx6.77inchx5.51inch Post Pin Length 2.8cm/1.10inch Post Pin Bottom Diameter 4cm/1.57inch Post Pin Port Diameter 1.9cm/0.75inch Package Includes: 1 Boat Seat Pedestal Base Kit Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.