Flower drum, hehe, is not Fengyang's flower drum, commonly known as "flower drum barrel", but axle skin. According to the number of pieces, there are generally 3 and 5 knitting methods (the front and rear wheels are different, especially for permanent 28 bicycles). Decades ago, in the scooter era, the most popular saying was flower drum. Now everything on a bicycle is called axle skin. I hope it helps you! Now you see it! Hope to adopt! thank you