They may be designed for connecting bed rails to the bed posts, but I am sure you’ll see as many other applications for them as I do. Made with 1/8" thick steel bodies, swaged hooks on the bed rail piece fit through slots in the bed post plate, locking tighter with increasing weight. Requires six #10 mounting screws per pair; Sold in a set of 4 pairs. Approximately 5/8" wide and 6" long. Yellow zinc plated. Made in China.