Suitable for all types of sockets, bit inserts, for direct drive via the drill chuck or using a 1/4 inch socket holder. Professional adapter set holder, robust and durable. For all drills and screwdrivers. Hexagon adapter to 1/4 inch, 1/2 inch, 3/8 inch, hexagonal shaft suitable for all quick-change adapters, extensions and drill chucks. Easy identification by colour coding. Suitable for DIY, profession, auto parts, repairs and more.