Our 2 row socket trays accommodate the Shallow and Deep sockets all in one holder. These trays help straighten out toolbox clutter and chaos by providing easy access & organization for individual sockets.; Each post is clearly marked for socket size; Organize your sockets for quick, easy identification by size and style; Post bases beefed-up to hold sockets more securely; Each tray holds Shallow and Deep Sockets all in one holder; Made of tough ABS plastic that resists oil & grease; Fits most U.S. and foreign made sockets; 100% Made in the USA; Set includes: 1/4" metric: 4-15mm (14 slots); 1/4" SAE: 1/8" - 5/8" (13 slots); 3/8" metric: 6-20mm (15 slots); 3/8" SAE: 1/4" - 1" (13 slots); 1/2" metric: 10-27mm (17 slots); 1/2" SAE: 3/8" - 1-1/4" (14 slots)