The Wera 05311517001 Socket Adaptor is a high-quality tool designed for use with manual nut setter inserts. With an overall length of 50 mm, this adaptor provides sufficient reach to access deep-set nuts. The adaptor features a 1/4" external square head that securely connects to a socket wrench. The 1/4" hexagon drive (Wera connecting series 4) enhances the adaptor's compatibility with a wide range of tools, making it a versatile addition to any toolkit. Additionally, the adaptor is equipped with a friction ball that allows for manual nut spinner sockets. This feature facilitates easy and efficient fastening while minimizing the risk of slippage. Whether you are a professional or a DIY enthusiast, the Wera 05311517001 Adaptor is a reliable and durable tool that provides exceptional performance, precision, and versatility for all your fastening needs.