I have the Classic as well but am keeping. Sorry I missed your question in red. Here's a thread on them showing the package.
https://forums.macrumors.com/thread...ss-steel-adapters-from-freedomoclock.1892681/
I bought my adapter from this seller and actually got mine in the mail today (came earlier than expected too). They look good. I matched them up against my classic band to check size. Haven't taken them out of the packaging yet as my watch bands I ordered from globalwatchbands.com won't arrive until Friday (so far very happy with them as well, nice on the phone and prompt shipping). Both seller and watch band company are in the U.S. so you don't have to deal with language issues when you have questions about what you are interested in and the ship time is short when in stock. You should check them out for leather bands. If you do ask them about their Father's Day sale. I saved an extra 10%.
BTW the freedomoclock seller in NY also sells adapters with the curved tubular extension. I bought that one as well but need to pick up some loctite to set the screws so they don't come out. That style is pretty much a one time band version as the screws should be replaced with new ones if removed. Have no idea where to get those tiny, tiny screws so I'm reserving it for something i would want to keep on the adapter. The other spring style adapter is more changeable.