6-in-1 function, common size combinations multiply the range and capacity of your jack system, making your set highly versatile with multiple repair needs. The SET INCLUDES: This set of adapters includes 3 pieces. Reducers and 3 pieces. Adapters: 3/8" (F) to 1/4" Drive (M) reducer, 1/2" Drive (F) to 3/8" Drive (M) reducer, 1/4" Drive (F) to 3 adapter /8" Drive (M), 3/8" Drive (F) to 1/2" Drive (M) adapter. Design Guidelines: Spring-loaded distraction balls on adapters lock sockets in 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 made 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 | efficient | Efficient: Users trust Sukudon to be quality tools. Limited lifetime warranty. If you have any issues with your SUKUDON 6 Piece Socket Adapter and Reducer Set, simply contact customer service for troubleshooting, parts, replacement or refund. Includes: 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)