Originally Posted by
Ex Pres
The early series of UN-7x series BB had removeable cups on both sides. This makes them useful for using in multiple BB threadings. Phil BB cups fit these. So if you want to use it in a French threaded frame, you're good to go with Phil cups.
Edit: The -72 was the last with removeable cups on both sides.
Yes, and this is why I have a stash of used UN72s as well as Phil French rings. This way I always have a stock of high quality BBs that are compatible with French threaded frames.
The UN72 is a pretty high quality unit, and all three of the ones I have spin like buttah.