(...) They use two hemispheres sandwiched inside the socket. You can use one by itself if you really feel like it, but it's a tiny bit sloppier without the second hemisphere to ride against. The only thing holding them together is pressure from the (...) (21 years ago, 31-Jul-03, to lugnet.build, lugnet.space, FTX)
(...) Thanks, David. Think I'll order a couple from BrickLink and see if I can get them to do what I want. James (21 years ago, 31-Jul-03, to lugnet.build, FTX)
