I have gotten the kits from Penn State and Klockit.com. They are 1- 7/16" inserts. I like the kits from klcokit a little better. They have a threaded coupler that is a little smaller. IF you have never been to Klockit before I would recommend them for a variety of clock making supplies and other inserts(weather,picture frame, etc.
Oh before I forget I used the hut friction polish. I may get bold enought to try a CA finish sometime.