These plugs for square tubes have a threaded hole through the centre to accept a jacking screw or threaded foot for adjustment. Depending on their manufacture, the surface of the plastic cap can be more or less rough.
All the advantages of the standard tube plug with height and level adjustability available.
Manufactured in polyamide for strength these plugs are robust and well finished.
For use in any industry using square tubes and tubing. General fabrication,conveyors and light machinery construction, frame making etc..