Square base plate. Use this tube fitting for positioning constructions. Due to the shape of the base plate, it can be fixed nicely on a surface at a 90° angle. Do not use it as a base for supporting safety railings or similar constructions.
Another big plus of the black coating is, that the color gets into the material really deeply, which prevents the connectors from corroding. The paintwork is not resistant to UV radiation and is therefore not suitable for outdoor use. The tube fittings are equipped with black-colored stainless steel adjusting screws with cutting edge.