Not sure, they came along with a large purchase...
Also have rings and bearings of various sizes. I'll check on the cost of stamps, you'll need to check # for your application.
There is more crap than you can shake a stick at, still looking through boxes.
I'm still trying to find time to look through them, maybe Sunday.
If I'm lucky nobody will feel like working if I get enough out of them Saturday and I'll get a day off. I let you know what I find. Good to hear from you Brian.