Amazon.com: attwood Swivl-Eze 238 Series Boat Pedestal Seat Kit 23813-7, One Size : Everything Else
Amazon.com : Boat Seat Pedestals and Bases Boat Pedestal Seat with Slide Swivel and Height Adjustments for Marine Boat Seats Captain Chair Fishing Seats 13.5 Inch to 18 Inch Height Adjustable Base :