ALZO Studio Boom Kit, Adjustable Boom with Clamp And Heavy Duty 10 Foot Light Stand Air cushioned stand and stable footing Supports all ALZO light heads 5 pound counter-balanced adjustable boom arm provides 40 inches typical extension, 60 inches max extension with additional counter weight Universal junction attaches to posts up to 1 1/8 inches diameter This product carries a 5 year warranty