These strap locks, are stunning to look at, very very beautiful. They look amazing especially on black guitars with gold hardware.
This new design, with the screws directly embedded in the locks is very modern and makes it a bit easier to install them.
Quality wise, there's really not much to say, it's the Schaller we all know and love. Personally I've been using them for "only" the past 14 years, and I don't intend changing my habits any time soon.
Absolutely recommended, buy them with confidence, you'll love them.