Easily add on sockets, ratchets, and extensions to Ernst socket rails. Clips snap into place and can adjust position for customization. Ratchets and extensions are conveniently stored with sockets on one holder. Twist lock clips keep sockets secure. Includes 1/4”, 3/8” and 1/2” Face Mount Ratchet & Extension Holders and 15 each of Twist Lock 1/4”, 3/8” and 1/2” Socket Clips. 2 sheets of 96 I.D. stickers (Metric, Standard and Torx) included for socket identification. Made in USA. Ernst Manufacturing products are 100% made in the USA. They supply innovative, high quality storage products to some of the leading names in the industry. Add-on socket clips to expand your socket storage. Twist lock socket clips keep sockets secure. Fits a wide range of tools; Use with any Ernst socket organizer. Ratchet and extension holders keep tools in one easy place beside your sockets. Weight: 0.4 Pounds.