The stoppers will fit almost any headjoint, but the crowns must be made to size. Any repair person or engineer will be able to do this for you in seconds using a vernier caliper. Yes, and it only takes a minute . All you have to to is push out the original stopper, push the new stopper in place and push the new crown in place. I now provide an insertion tool.
Delivery is usually within a few days.
I now accept credit cards.