Features and Benefits: Organize your sockets for quick, easy identification by size and styleSee which socket is missing at a glanceEach post is marked for socket sizeEach tray holds from 26 to 34 Standard and deep socketsFit most standard tool boxes1/2 in. Drive Metric Tray 10mm-27mm. High impact plastic. Resists oil and grease. Each post marked with socket size. Sockets NOT included. Made in USA.