2. Adjusting the spokes means adjusting the tightness of the spokes to adjust whether the wheels of the bicycle rotate on the same plane. In this way, the bike will be more stable. Need a spoke wrench, shaped like a circle, with 4-6 bayonets of different sizes, suitable for different sizes of spoke caps. One end of the spoke has a small hole with a 90-degree angle passing through the wheel drawer, and the other end has a spoke cap passing through the spoke hole of the wheel rim. There is a thread between the spoke and the spoke cap, and the spoke cap can be rotated by the spoke wrench to adjust the spoke tightness. However, before adjusting the spokes, the tire must be deflated. Otherwise, the rotating spoke cap can easily puncture the inner tube.