6 String headless guitar bridge string lock High-quality guitar bridge set, easy to use and install. Each string is fixed by two string tensioning screws of locks, which plays a role of double reinforcement, ensuring that the strings not loosen Please check the parameter drawing in the attached pics before placing your order. Packaging: It includes A set of titanium alloy 6-string guitar bridge string lock 6 screws, 1 wrench Material: zinc alloy. Color: Black Package Contents: 1 * Guitar bridge string lock 6 * Screws 1 * 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.