[Flexible Screwdriver]: This drill bit extension works with standard hand and electric drills, providing excellent performance. It can bend and rotate, making it ideal for tight spaces. Lightweight and easy to use, it connects effortlessly to a standard hex screwdriver, suitable for wrenches, drills, and manual tools.<br> [Size]: The hexagonal shank bit connection size is 6.35mm (1/4 inch), with the internal hexagonal head connector also measuring 6.35mm (1/4 inch).<br> [Easier and Quicker]: The Flexible Screwdriver operates in any direction, making it easier to access difficult areas and complete tasks more efficiently.<br> [Application]: This Flexible Screwdriver is designed for use in tight spaces where traditional screwdrivers struggle, such as in computer cases, electrical cabinets, furniture, and appliances.