High quality chrome vanadium steel socket adapter set, heat treated for high hardness and durability. The pulse/quick-change style adapters are rated for a maximum torque of 72 N·m, suitable for industrial or mechanical use. Three piece set of drill/socket adapters - 1/4 inch, 3/8 inch, and 1/2 inch drive sizes - Designed to access hard-to-reach fasteners and spaces, making it easier to tighten or loosen screws and nuts in tight spots Spring ball detent for secure engagement - Spring-loaded detent ball prevents the driver head from slipping - Enables quick, secure engagement and efficient work - Includes a 1/4 inch hex shank compatible with all quick-change systems and standard bit holders Universal socket accessory - Universal socket included, a versatile addition to universal joint sets - Ideal as a reliable and flexible connector for various fastening tasks Specifications at a glance - Material: chrome vanadium steel - Drive sizes: 1/4", 3/8", 1/2" - Hex shank: 1/4" - Maximum torque: 72 N·m Use scenarios - Automotive maintenance in confined engine compartments where space is limited - Bicycle, motorcycle, or small machine repair in tight or awkward angles - Appliance installation or furniture assembly in restricted or awkward spaces Professionals and DIYers alike will benefit from this adapter set's strength, compatibility, and reach.