The Rolls MSC106 is a stand bracket with tension adjustment screw - designed for attachment to any Rolls Accessory such as a PM50s, PM351, HA43 Pro, etc. It\'s made of thick steel for strength, and has two holes through which the screws attach to the back of the accessory product. The bracket may be easily mounted to microphone stands, music stands, etc., for convenient operation of the attached accessory.