Extra high steel tube combination for use with various base plates with M20 threaded bushings. The extension tube has a diameter of 35 mm to accommodate speaker cabinets with flange adapter. The height is fixed with a safety hook and secured by a clamping screw for a vibration-free and firm fit. The slim design of the clamp allows space-saving transport and ensures a stylish appearance. The usable height is between 1,400 and 2,400 mm and is adjusted in 5 steps of 200 mm. The integrated M10 threaded bushing allows the attachment of a truss or the direct mounting of lights.