This impact rated socket adaptor set enables 1/4", 3/8" and 1/2" sockets to be used in tools such as drill drivers and impact drivers. The adaptors have a standard 1/4" hex shank design for universal compatibility. Being impact rated, they are suitable for heavy duty use. Features and Benefits • Impact rated socket adaptor set • Ideal for using impact sockets on an impact driver • Also suitable for most conventional drill drivers • Suitable for 1/4", 3/8" and 1/2" square drive accessories • Standard 1/4" hex shank for compatibility with a wide variety of tools Specifications • Shank: 1/4" Hex • Square Drive: 1/4", 3/8", 1/2" Contents • 1/4" Square Drive Socket Adaptor • 3/8" Square Drive Socket Adaptor • 1/2" Square Drive Socket Adaptor