Wise 8WD2002 King Pin Power Rise Pro Seat Pedestal is designed for Pro and Casting type boat seats. Air-Powered Adjustable adds 7" in height - from 22.5" to 29.5". 360 degree rotation. Fits in most King Pin Type Base Plated. Brushed Aluminum Post. Steel Pin with Injection Molded Plastic Retainer Clip. Fits all seats with standard 5 1/4" mounting hole pattern.