Boat seat pedestals

The strongest adjustable pedestal available, height adjustment tightens with a 360° vice-grip style surface mechanism. Adjusts from 14"-20" without wobbling.

... shock-mitigating system for boats seats that absorbs shock and vibration to prevent pounding on the back and legs. Because typical pedestals are rigid, they transfer wave jolts directly ...

Telescopic seat support, swivel 360° compact base.