Superbit: Easy, Lightweight, fast, connect to the standard hex screwdriver. It's perfect for the Wrench, and it can be connected to drill, rechargeable drill or manual wrench. Size: The size of the connection part of the hexagonal shank bit is 6.35mm (1/4inch), and the size of the internal hexagonal head connector is 6.35mm (1/4inch). The Length is 295mm(11.6in). Screwdriver Flexible: The flexible drill bit extension can be used for ordinary hand electric drills and electric drills with perfect performance. It can be bent, twisted, turned, and used in narrow and narrow spaces. Scope of application:This Superbit Screwdriver Flexible is mainly used in narrow spaces where computer case, electric cabinet, furniture, electrical appliances and other screwdrivers cannot work in normal operation. Easier and Quicker Use:Superbit screwdriver flexible is universal in any directions, allows you get into those difficult places and get the job done easier and quicker., Manufacturer: Oanruyan