On-Stage MSA-9508, Additional arm for Posi-Lok microphone stand, Arm length: Approx. 17.8 cm, Posi-Lok brings more flexibility to mic placement, For combination with standard 5/8"" (27 tpi) microphone stands and accessories, Round locking screw for quick and easy angle adjustment, Angular range: 300 degrees, Thread: 5/8"" (27 tpi), Colour: Black