1. Precision engineered, with quality Plating. The roller saddles are perfect for using with a for , or just to reduce string breakages and add sustain on any for LP style guitar. This model has 6.3mm post holes to drop over 6mm posts, typically found on most for guitars and many other similar import guitar . 2. Includes anchors and large M8 threaded bridge posts with 6mm diameter top section 3. High stability saddle retention rings to saddle rattle 4. 2.05inch(52mm) string spacing E to e; 73.5mm center to center post spacing,Bridge is 14inch radius. 5. Tune-O- style bridge with roller saddles for increased tuning stability, higher sustain and less string breakages. Color: Gold&Silver&Black Material: Zinc Alloy + Copper Package Contents: 3 x Roller Saddle Bridge 6 x Studs 6 x Wrench Only 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.