Why are there so many 80 arches?

There are so many bow doors because the supporting head is relatively large and suitable for outdoor loading. 20 is enough for a pure shooting competition. The size of the bow door depends on the position of the backhand after aiming with a horizontal grip. The lower ones are bigger and the higher ones are smaller. The main battle is shock, just hold it in your small hand. The traditional bow is not used to the big bow when it becomes flat skin. If there is no pure competition, there will be outdoor entertainment. The back hand will be positioned under the cheekbones, probably with the nose. You have to try it yourself. You must hit the target within 20 meters. You'd better aim at your head about one centimeter, so if it's about 40 meters, it won't affect your sight. The standard size is 8020, and a small number of 8422 can achieve all the functions of 8020 (but 8020 depends on the rubber band in the bow door). Buy it according to the current size of the bow door, otherwise the imaginary point is too high to control. Larger braces are suitable for outdoor products, and 20 braces are enough for pure shooting competition. The size of the bow door depends on the position of the backhand after aiming with a horizontal grip. The lower ones are bigger and the higher ones are smaller.