... seat pedestal,marine seat pedestal,7" marine pedestal,high steel,3 inch wide shaft,fixed on 360 swivel base. 7" boat seat ... pedestal,marine seat pedestal,7" marine pedestal.steel constructed,fixed on ... 360° swivel base mounted on top for a complete seat mounting syestem.3" wide shaft. Great for Jon ... . EDC/powder coating finishing available. 7" boat seat pedestal