扳手 is a Chinese word that means "wrench" in Engpsh. Wrenches are tools that are used for turning bolts, nuts, and other fasteners. There are several different types of wrenches, including adjustable wrenches, box wrenches, and open-end wrenches, each of which is designed for a specific purpose. Wrenches are an essential tool in any mechanic's or handyman's toolkit, and they are used in a wide variety of apppcations, including automotive repair, construction, and home maintenance.