The ProX T-C2A Light Duty Mounting C-Clamp for DJ lighting applications is designed for many hanging applications. It tightens down securely to ensure you get a locked in feel. It's a great performing clamp at a great value price. The T-C2A can also be used on any truss with a diameter of 1.5"- 2". It can be used in a wide variety of pipe sizes up to 2", making them a versatile hanging option. It's idea for use in DJ lighting applications and stage, theatrical, concert, and events where all types of hanging positions and angles are used with fixtures as pin spots, PAR cans, LED PARs, wireless DMX receivers, dimmer packs and other small lighting equipment that does not move. It is not intended for moving-head fixtures. The C-Clamp will hold the fixture on the desired angle compared with an O-Clamp that may really properly hold a fixture that is hanging right under the truss or hanging sideways off a vertical truss. This clamp is not designed for hanging fixtures above audiences.