The extension tube has a diameter of 1.377" 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 55.118 and 94.488" and is adjusted in 5 steps of 7.874". The integrated M10 threaded bushing allows the attachment of a truss or the direct mounting of lights.