We designed this bridge to work with Bigsby vibratos, in place of the Nashville Tune-o-matic. This is the only roller bridge that matches the 12" radius of the Nashville, so you maintain the string action you're used to. We gave it a low profile to keep the strings clear of the bridge body too, eliminating a frequent source of vibrato problems.
Thumbwheel height-adjustment studs and knurled bushings are included.
M5 x .8
About bridge & tailpiece measurements
String spread is the distance between the centers of the outer strings on a bridge or tailpiece.
Saddle radius determines the arc formed by all the individual saddle heights, and is similar to the measurement of a fretboard.
Stud/post spacing is the distance between the centers of the mounting posts of a bridge or 'stop' tailpiece.