Check the listing for details. Mechanics Time Saver 3 Row 36 Post 1/2" Drive Lock-A-Socket Tray LASTRAY50. Color: Red, Condition: New. Listed at 42.97 USD. 1/2" (LASTRAY50) each row has 12 posts = 36 total posts-The 3 row Lock-a-Socket Tray uses the same Lock-a-Socket technology as our popular Lock-a-Sockets.Each tray comes with 3 rows of locking posts.To lock the socket, simply turn the socket to the right.To unlock the socket, simply turn the socket to the left.Lock-a-Socket locking posts are interchangeable for customization and are also available separately.Rubber pegs are located underneath for surface grip and protection.Swivel handles are included for easy carrying.The tray is made from 16 gauge, powder coated steel for extra strength and durability.Posts are interchangeable for customization and are available separately.Dimensions: 18 1/4 x 5 3/8.