6 in 1 function, common size combinations multiply the range and capacity of your socket system, making your set very versatile with multiple repair needs. The Set Includes: This adapter set includes 3 pieces. Reducers and 3 pieces. Adapters: 3/8" Reducer (F) to 1/4" Drive (M), 1/2" Drive (F) Reducer to 3/8" Drive (M), 1/4" Drive (F) to 3 Adapter /8" Drive (M), 3/8" Drive (F) to 1/2" Drive (M) adapter. Design Guidelines: The spring-loaded distraction balls on the adapters lock the sockets in place Safely, get the most out of your sockets with this handy set of adapters and reducers that ensure you'll always have the right size for the job. Quality materials: these adapters and reducers are manufactured made of high strength chrome vanadium steel, heat treated and have a corrosion resistant nickel/chrome finish for industrial, mechanical or construction work. These adapters meet and exceed ANSI/ASME standards. Reliable | effective | efficient: users trust Sukudon to be quality tools. Limited lifetime warranty. If you have any problems with your SUKUDON 6 Piece Adapter and Socket Reducer Set, simply contact customer service for troubleshooting, parts, replacement or refund. Contents: 3 Reducers and 3 adapters 3/8" reducer (F) to 1/4" drive (M), 1/2" reducer (F) to 3/8" drive (M), 3/4" reducer (F) to 1/2" drive (M), 1/4" reducer (F) to 3/8" adapter (M). /20.3 Drive adapter (F) to 1/2" (M), 1/2" adapter (F) to 3/4" adapter (M)