A screwdriver is a tool used to tighten and loosen screws. It is one of the most commonly used tools in maintenance work. Screwdrivers usually consist of a shank and a bit. The bit has different shapes and sizes to suit different types and sizes of screws.
A repair tool set is a common tool set, usually composed of a variety of repair tools, used to repair and maintain various equipment and machinery. These tool sets usually include screwdrivers, wrenches, pliers, measuring tools, etc. to meet the needs of maintenance work. The following details some common maintenance tool kits and their uses.