1. Ordinary screwdriver: it is a screwdriver with head and handle together. It is easy to prepare and can be used as long as it is taken out. However, because the screws have many different lengths and thicknesses, it is sometimes necessary to prepare many different screwdrivers.
2. Combination screwdriver: a screwdriver that separates the screwdriver head from the handle. To install different types of screws, just replace the screwdriver head, and do not need to bring a large number of screwdrivers. The advantage is that it can save space, but it is easy to lose the screwdriver head.
3. Electric screwdriver: An electric screwdriver, as its name implies, uses an electric motor to replace human hands to install and remove screws, usually a combination screwdriver.
4. Clock screwdriver: It is a precision screwdriver and is often used to repair hand strap clocks, so it is called.
5. Small diamond screwdriver: The head handle and body length are smaller than those commonly used, not a clock screwdriver.