Shafts are still widely used in many places. Why do you say this, in fact, because in many machines and the like, you need to use the shaft, but how about the quality of the shaft? To judge whether it is a good shaft, it means that our shaft must use a very good quality shaft to help us improve the quality of the work of our machine, then in this case, we It must be a good shaft. So this time there is this precision shaft. Why is this shaft very precise? This is the case. The error of using this shaft is Basically, there is no such thing, so if there is no error, it will definitely be better when it is used. This is certain.