These are made in the 90s and in my opinion have a better feel to them than the modern PingWorks (China) made tuners. The nickel plating is shiney with only slight oxidation.

They are collared tuners suited for guitars with modern 10mm peghead holes. Guitars with push-in bushings (like Custom Shop reissues) would need some reaming before installation.

The six mounting screws are #2 size (most typical)