Air Adjustable Height Pedestal Base - 15-19in.

STRONG. STABLE. SMOOTH. Unmatched strength Heavy-duty casting easily supports popular oversized helm seats Supreme stability A rigid mount and wider seat interface create ultimate pedestal robustness Extra smooth Improved slider motion facilitates easy fore and aft movement Dampening gas spring on the 278 Air System absorbs impact (For total system height, add 1in. to the base height.)