Zwaardvis Seat pedestal 370-460mm adjustable height powermatic dia.100/76mm sliding /rotating Poseidon PB I

A state-of-the-art chair pedestal with strong horizontal adjustment. 
Rotates 360° and locks precisely in 22.5° increments. 
Except S/S sliders, all parts are made out of anodized aluminium (15-20 microns).
Gas strut 400N for height adjustment. 
Glued base Ø 300 mm, tube Ø 100/76 mm.
Height adjustable, horizontal movable & rotating

Pedestals meet and exceed American safety guidelines ABYC/H31