These premium 3.5" Helm Chair Pedestals and Slide/Swivel Top Plates are precision engineered and built by Garelick Mfg. one of the leading helm chair pedestal manufactures and suppliers in the marine industry. This Helm Chair Pedestal comes in a variety of heights and has a 10.5" mount base. (w/ optional detachable stanchion plate) This Ped. also includes a polished aluminum footrest with a White Starboard foot platform. This Pedestal set is a perfect paring with the Flexsteel 431, 289 and 439 Helm Chairs.