Liugong loader accessories model size and precision with just the right state can be lucky success.
Therefore, when the thread is created, it is generally on purpose to make the section of ZD a little smaller, although it looks a little bit loose, but it is also the only way to do it, but fortunately, the thread is generally not directly used for processing, just to show the purpose, so it is irrelevant.
But if you add it, it's ok.
Use model:835、842、50C、855、50CN、856