Capitalize on maximum configuration possibilities with the new Socket Boss Universal Twist-Lock Socket Tray from Ernst Manufacturing. Versatility is a must for organizing any socket set. Individual rails can be removed or switched for customization. Add or remove socket clips, label socket sizes with I.D. stickers, trade colors, swap out drive sizes, add ratchet and extension holders, the options are limitless for organizing your own set of sockets. Perfect for storage in the drawer, on the bench, or on the go. This compact set fits a large set of tools using a small amount of storage space. Easy to grab and go with handles on each end. Twist-Lock clips keep sockets secured for transport and prevent tool loss. Even upside down sockets are locked in tight. Socket rails are locked in the tray for security, and unlock with the push of a button. Universal socket rails have also been improved with molded end stops and extended space for sockets. The full length of an 18 inch rail can be loaded with sockets. We recommended red for SAE and blue for Metric Includes: one socket tray, two universal socket rails, and thirty 1/2-inch drive twist-lock socket clips. Made in USA. Measures 19.75 inches by 3.63 inches by 1.35 inches. Socket Holders feature patented TwistLock clips that keep sockets secured for transport and prevent tool loss even when turned upside down Patent No. US 8,770,418 B2 Socket holder holds up to 34 sockets and socket accessories for use with standard 12 Inch drive sockets Socket rails are locked in a socket organizer tray for security and unlock with the push of a button. Suitable for portable or stationary tool chests Tool socket organizer tray measures 19.75 inches long by 5.3 inches wide and 1.35 inches deep. Socket rails measure 18 inches. Professional mechanic and automotive industrygrade toolbox socket organizer with a lifetime guarantee. Made in the USA. Ernst Manufacturing offers excellent customer service and a commitment to customer satisfaction, ensuring that users receive the highest quality products and support.