I needed a SINGLE ball bearing to fix a capacitor on an antenna tuner. Just ONE little steel ball to go on the end of the shaft where there was a little divot for the purpose. I went ALL OVER TOWN to find anyone who had a steel ball. You can still find a radiator cap for a Model A in this town...but a steel ball? No way. Well, I found ye old sports store was selling flagons of BBs in the handy 2500 BB size. So I thought I'd give it a try...they were ABOUT the size I needed. But I only needed one, not 2500. So now I have 2499 copper clad BBs excess to my need. I guess I need to re-acquire a BB gun again. Now you know.