The FLOW CLAMP is based on the original TC Helicon PERFORM Series side cap design, using a special material that combines extreme longevity and a dependable, firm connection with the mic stand. It consists of a metal bracket that is screwed to the mixer and the proprietary plastic part that clips on to the mic-stand without any screws. You can choose to mount the clamp to the bracket in 3 angles (0°, 15°, 30°) depending on your preferred mixer orientation.