Tired of losing sockets? This storage system makes it easy to tell when all of the sockets are back where they belong at the end of the day, and unlike those troublesome spring and clip socket sticks, this system is easy to use! Just drop the socket over the appropriate post. The socket size is permanently marked on each post, and the bases fits snugly inside the proper socket for instant size confirmation. Storage trays are made of high-impact plastic, resist oil and grease, and have posts for standard and deep well sockets. Color coded for identification standard trays are red, metric trays are gray. Sockets are not included. SST-2004 measures 3-3/4" x 3-1/2" x 20-1/2". Made in USA.