RE: OS 160 Nose Ring
The OS-140 nose ring will not fit without doing a bit of dremel work and then you need to retro fit a rubber O-ring,...didn't work well for me,..was an experiment that worked but not well! The nose ring has to be dremeled down so far it's difficult to keep the O-ring in it for any extended period of time.
Your better off using the one Andy (as suggested) makes or make your own.
Regards,
Bill H.