Swivl-Eze Fixed Height Lock'N-Pin Post Boat Seat Accessory - 11in Swivl-Eze is the #1 supplier of ¾” pin seating hardware The 3/4in system gives you outstanding economical performance The design is proven by decades of experience Posts are available as fixed, manually adjustable, or power-adjustable Seat mounts, posts and bases available in steel, aluminum, or stainless steel The Swivl-Eze Difference The patented Lock' N-Pin system leads the industry in safety Lock' N-Pin prevents unintentional detachment for seat mounts, posts and bases Lock' N-Pin products exceed ABYC Standard H31.6.1 ABYC Code "B", The Swivl-Eze Fixed Height Lock'N-Pin Post Boat Seat Accessory is not to be used at helm/driver position when speeds are higher than 5mph. Threaded