1. Each post is clearly marked for socket size 2. Organize your sockets for quick, easy identification by size and style 3. Post bases beefed-up to hold sockets more securely 4. Each tray holds Shallow and Deep Sockets all in one holder 5. Made of tough ABS plastic that resists oil & grease 6. Fits most U.S. and foreign made sockets 7. 100% Made in the USA 8. Tray holds 28 Sockets Total 9. Holds the Following Sockets: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1, 1 1/16, 1 1/8 and 1 1/4