The shape of the line cup opening is an oblique cut. The bevel spinning wheel has a bevel shape at the mouth of the line cup, which is conducive to the exit of the throwing line and can be thrown farther. It is usually an oblique mouth of about 25 degrees. Its biggest advantage is that the line is smooth when the throwing rod comes out. Because the friction between the line and the upper port of the line cup is smaller, there is not much line left in the line cup after throwing the line, so it is better than the line thrown by the flat mouth line cup. Far, but there is one thing. The inclined thread cup should not be overfilled with thread, and the thread should not be higher than the thread cup or level with the thread cup, otherwise the chance of thread frying is greater than that of the flat thread cup.