Height-adjustable telescopic column for aluminium helm seat or table. This universal swivelling column is infinitely height-adjustable. The mounting plate is removable and can be rotated and locked in any desired position. It is mounted with slotted holes, bolt circle 175-210mm. The base plate has a diameter of approx. 22.5 cm and has six 7 mm holes for fastening with screws or bolts.details: - 360° rotatable - Tube Ø approx. 73mm - Polished base plate Ø approx. 22.5cm - Heights: 50cm - 75cm