1. Precision engineered, with quality Plating. The roller saddles are perfect for using with a , or just to reduce string breakages and add sustain on any LP style guitar. This model has 6.3mm post holes to drop over 6mm posts, typically found on most guitars and many other similar import guitar .2. Includes anchors and M8 threaded bridge posts with 6mm diameter top section.3 High stability saddle retention rings to eliminate saddle rattle.4. 2.05 inch(52mm) string spacing E to e; 73.5mm center to center post spacing,Bridge is 14 inch radius.5. Tune-O-Matic style bridge with roller saddles for increased tuning stability, higher sustain and less string breakages. 6 saddles with intonation adjustment.color:BlackMaterial: copper + zinc alloyPackage Contents:1 x Roller Saddle Bridge2 x StudsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.