Check the listing for details. *NEW Roller Saddle BRIDGE M4 Threaded Post for Gibson TuneOMatic Les Paul Chrome. Condition: New. Listed at 12.99 USD. Precision engineered, with high quality Plating. The roller saddles are perfect for using with a Bigsby, or just to reduce string breakages and add sustain on any LP style guitar. This model has 4.2mm post holes to drop over 4mm posts, typically found on USA Les Pauls, Gretsch guitars and other similar US spec guitar brands. High stability saddle retention rings to eliminate saddle rattle; Metric M4 threaded bridge posts with separate thumbwheels 2.05" (52mm) string spacing E to e; 73.5mm center to center post spacing Tune-O-Matic style bridge with roller saddles for increased tuning stability, higher sustain and less string breakages. 6 saddles with independent intonation adjustment * This will fit many US Gibson Les Paul guitars when using the original bridge posts supplied with the guitar. The original bridge posts must have a 4mm diameter top section to fit this bridge. This bridge will not fit newer 2014- present models with the larger 5mm diameter top section. Please be sure to measure before ordering if you do not know what you have. Finish: Chrome Condition: New