If these Omega reels are the same as the ones marketed under the name AP and Samigon and Arista (and likely a host of other names) they do fit the Paterson tanks, and I prefer them for 120, because they have wider flanges at the entrance.

Here is a link to Freestyle's version of same:

http://www.freestylephoto.biz/55043-...el?cat_id=1603

Matt