These connectors are fine. I sort of messed up when I selected it, however, as I need to connect each of the two jacks to a different line. The condutors to both jacks are paralleled to a common terminal for each of the four colors, so I had to clip the red/greem conductors for the second jack from their terminals and attach them to the terminations meant for the black/yellow pairs to get tip and ring to each of the jacks separately. Another form of the same connector would have worked more easily in my case, but this is MY fault for not thinking the whole thing through before I purchased these.
This connectpr would be fine in the case where one intended to connect a single line to both a phone and an answering or fax machine for example.