Functions: 6-in-1 SetCommon size combinations multiply the range and capacity of your socket system, making your set very versatile with multiple repair needs Design ConsiderationsThe socket balls Spring-loaded detents on adapters lock sockets securely. 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 MaterialsThese adapters and reducers are made from chrome vanadium steel high strength, heat treated, and the nickel/chrome finish is corrosion resistant to eliminate the risk of rust for long tool life, for industrial, mechanical or construction work. These adapters meet and exceed ANSI/ASME standards Easy to IdentifyEach socket has its size printed on the socket itself, making it easy to identify after removing a handful from the case Easy StoragePlastic case for easy storage and carrying of all components, very convenient for your daily use