Application: Can be connected to electric drills, electric screwdriver or hand wrench. Features: 90 degree bending, left and right rotation, you can use it in a narrow space to tighten screws. Easy to Use: Can be connected to a standard 1/4" hex drill bit. The chuck head has a magnetic lock and adjustment to prevent the socket from falling off. Ergonomic Handle: Does not get hot during use, allows closer access with your current impact driver, with increased transmission force. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.