6 in 1 Pack: Common size combinations multiply the reach and capacity of your socket system, making the set very versatile for multiple repair needs. Design. The adapters' spring-loaded detent balls lock sockets securely, get the most out of them with this handy set of adapters and reducers and ensure you always have the right size for your jobs. Quality materials. These adapters and reducers are made from high strength, heat treated chrome vanadium steel. The nickel/chrome plated finish is corrosion resistant and eliminates any risk of rust, to ensure long tool life, for industrial, mechanical or construction work. Easy to identify. Each tip has its size on it, making it easy to identify when you remove it from the case. Easy storage. Plastic case for easy storage and transportation of all components, very convenient for your daily use.