I bought this to replace the Tun-o-matic bridge on my G5420T Gretsch. I wanted a bit more TWANG out of the guitar, and a smoother response from the Bigsby wiggle stick. I am happy to say I got both in droves!! Serious twang now, and a nice fluid tremolo action. The bridge installed on the existing bridge base without having to move anything around. Only a minor height adjustable and it was ready to go! If you want some added sustain, twang and a better feeling Bigsby, you can't go wrong with this bridge!!