Expand Your Tool Kit With the 3-Pc. Adapter SetThe quality Craftsman 3-pc adapter set will expand the number of sockets in your existing set, by allowing you to mix and match socket and ratchet drives. With these easy-to-use adapters, you will get more done with fewer tools and less expense. These are reliable, quality tools, built to high standards and made to exact dimensions with minimal tolerances, ones that will help you get the job done without stopping to hunt around or shop for another tool. The 3-pc adapter set has a durable full polish. Included adapters are 3/8 F to 1/2 M, 1/4 F to 3/8 M, and 1/2 F to 3/8 M. So the set enables adapting socket to ratchet sizes between 1/4 inch and 3/8 inches. You'll find these are the most useful sizes for the majority of your projects. You'll get big savings in money and time by using these well-made, well-priced adapters.