The Wera Tools 05136000001 is a versatile and practical adaptor designed for use with nut spinner sockets. It features a 1/4" external square that allows it to fit securely onto a variety of tools, making it ideal for a range of applications. Additionally, the adaptor boasts a 1/4" hexagon drive, which is part of Wera's connecting series 1. This feature enables easy connection to a wide range of sockets, providing increased flexibility and efficiency in your work. With its robust construction and reliable performance, the Wera Tools 05136000001 is an essential tool for any professional or DIY enthusiast looking to tackle various tasks with ease and precision.