Passing a 3 mm shaft got a lot of play, when measured it was 3.2 mm. At the very least, I would like accuracy of inner diameter + 0.05 ~ 0.1. Other product reviews have similar opinions.
I think that plastics products are good as it is used for parts where water is applied. This is a small part so this color is not likely to be missing. The feeling of use is not a part where the impact always takes time, so it is impossible to understand immediately. Therefore ☆ 4 at present.