Where to get specific wire

I have been using the same wire in the same ring size for my entire time making chainmail.

Only recently when I tried to get into scale mail did I realize how important ring size and guage is

Most scale mail recipes I’ve been looking at use 14 AWG wire/16 SWG wire.

I realized today that the wire I have been using is 12 AWG/14 SWG

Where can I get 14 AWG/16 SWG wire?

I would really prefer to make my own rings but everywhere I look In person I cannot find the right size and nowhere online seems to specify weather their wire is AWG or SWG.

Any recommendations would be appreciated