Five Oceans Marine Boat Seat Pedestal with Swivel 8" & 14" Color: Black Dimensions: 6-3/8" Length x 6-3/8" Width Mount Type: Pedestal 360 swivel Heavy Duty construction with reinforced welded joints. Corrosion Resistance Recommended Usage: Freshwater use Pedestal Material/Finish: Powder coated steel Pedestal Dimensions: 3&#034; diameter Base Dimensions: 6 3/8&#034; x 6 3/8&#034;