Check the listing for details. Golden Age Locking Roller Bridge, Chrome. Condition: New. Listed at 62.43 USD. The Golden Age Locking Roller Bridge has low-friction grooved saddles that roll freely with a tremolo so your strings always return to pitch. Adjustable for precise intonation. This unique post-mounted brass bridge has low-friction grooved roller saddles for smooth string return, plus advanced features for improved intonation stability, such as: The holes for the bridge posts are elongated to allow overall intonation adjustment, and allen screws lock the bridge to the posts. The reversible roller saddles are individually adjustable for precise string intonation, and also lock to the bridge with allen screws. Use an 11mm drill bit to install the bushings. Allen wrench and thumbwheel mounting posts with bushings are included. Measurements: String spread: 2" Saddle radius: 14" Post spacing: 2-29/32" Post threads: M8 x 1.25 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.