The used Dual-Joint Tilter Bracket from Westcott is designed to facilitate articulating mounting of lights or accessories on a light stand.
The Tilter Bracket has an industry-standard “Baby” 5/8" receiver attached to 2 swiveling ball joints that offer 180°+ tilting. The bracket is locked down by and oversized T-handle. At the top of the bracket is a 1/4"-20 male thread that will support gear weighing up to 20 lb. The threads will also accept adapters such as a 5/8" stud.