I am selling a Marine Adjustable Seat Pedestal with swivel. It is new out of the box and comes as shown in pictures. This adjustable seat pedestal is constructed out of aluminum with a polished finish. It features a swivel mount with standard 5" x 5" mounting pattern. There are (6) 3/8" Dia. mounting holes approximately 8" apart, center-to-center. Approximate Measurements: Manufacturer Height: 13" - 18" Overall Minimum Height: 13 1/2" Overall Maximum Height: 19 3/8" Base Diameter: 9" Dia. Seat Mount: 6 5/8" L x 6 5/8" W For more information please contact a dealer in your area (BB /BA113 / 1012012). Shipping cost is for the continental United States (lower 48) only. For shipping outside of the continental United States please inquire about shipping cost before purchase.