I used these as replacement for my American Standard ones.
The ones on the American Standard are cool, but not very classy (to me), so I decided to give these a try, instead of changing the whole bridge.
It didn't fit perfectly though. But after a little sanding one the sides, they are in, and working very well. They are very well built! Very strong material.
As for the sound, it didn't make a difference to me.
I recommend. Really good...