Conventional water drop side covers have a small button, some of which are disguised as trademarks. Press and slide down to open the side cover and take out the thread cup. Some water drop wheels do not have buttons. The left side of the water drop wheel (that is, the side with only the knob to adjust the pressure) can be taken off. It cannot be pried open. You need to turn left or right, and then turn it away.

The water droplet wheel is a type of horizontal wheel:

The water droplet wheel is mainly used for lure fishing, so it is also called a lure wheel. Compared with the spinning wheel, the droplet wheel has higher casting accuracy, is small in size, and is easy to control when exiting the line. The disadvantage is that it is difficult to master the casting and it is easy to fry the line, which is what everyone calls fried rice noodles. Generally, more professional fishermen use drop reels in lure fishing.