Wise Series Aluminum Fixed Height Pedestal, 2-3/8" Diameter: * ABYC rated Class AD Driver * 9" fixed height works great for deeper runabouts and fish/ski boats * 2-3/8" diameter thick wall anodized aluminum post * Cast and e-coated seat spider mount * Can swivel 360 degrees or lock down tight with its locking handle * Raised 9" diameter anodized aluminum base * 6 recessed mounting holes * Fits virtually all brands of seats