The Springfield Marine Kingpin Standard Fixed Height Post for Boat Seat is a sturdy and durable accessory designed to securely hold a boat seat in place.Class B Only. Made of anodized aluminum, this silver post weighs 1.3 lb and has dimensions of 2.75 x 2.75 x 12.00 inches. With the brand's reputation for quality and the model's sleek design, this post is a reliable choice for any boating enthusiast looking to enhance their seating setup.