The two-toothed wrench, also known as the two-tiger wrench, is generally composed of two round steels welded to the end of a steel pipe, and has an F shape. When we open or close a larger valve, it is often used to pull the valve handle, or when the steel plate is rolled, the steel plate is pressed to facilitate welding. The disadvantage of this type of wrench is that the distance between the two teeth cannot be adjusted depending on the size of the valve handle or the thickness of the steel plate during use. We also used this type of wrench when stamping capacitor aluminum shells to install mold clamps, and improved the above problems. The two teeth of the wrench are fixed by welding, and the other is designed as a movable tooth that can move left and right, so that it is convenient to adjust.