Too, you can get a socket wrench, but it will have to be 4 point, not a 6 point socket. I'm not sure, but I think I've now a set of 4 point deep sockets. Just remember an 88 key piano will require 264 strings be adjusted to be fully tuned. While maybe I could do it, I rather let a pro do it. I believe Steinway pianos are still made in Philadelphia PA USA, or one of their close environs. At least that is where John Steinway made his.