American Dj Supply Proswivel Clamp Clamp And Turn As Needed Two 360 Degree Clamps 2 Inch Dual Head 2 Inch Truss Clamp Made Of Heavy Duty Aluminum, 360 Degree Wrap Around Clamp Fits 2 Inch Truss Or Pipe Standard Course 3/8 Inch Bolt To Hand And Standard Course 1/2 Inch Swing Bolt To Clamp