Because it is a solid build, it can be used with confidence. Particularly on the socket side, it is very effective because it is impossible to wipe cleanly unless you clean it with parts cleaner etc. when dust, dust and so on get into it.
The price is somewhat high, but I am very satisfied with making it solid. The size also fits perfectly with the coupler of Osaka soul that I use. The material of PVC meets all the functions I was looking for and I felt the goodness of usability.