Wave Dampening Pedestal Proven mechanical spring and hydraulic shock technology in a traditional pedestal 1100 lb rated spring with adjustable flow shock absorber. Access port at top of pedestal allows adjustment of hydraulic flow dampening. 17" polished brite dip aluminum pedestal with 12" round base. Thick wall (.213) posts. • Allows 2-I/2" of vertical travel • Developed and intended for offshore commercial and large recreational vessels • Tested to ABYC H31 dynamic static loads Use with 4" Locking Workhorse • Heavy-duty stainless steel lock Pin