Feature: 1. The string bridge is mainly used to set up strings, which can affect the feel of pressing the strings and the volume of the piano box. 2. The string bridge is made of zinc alloy, which is resistant to corrosion and friction, and is not easy to slip when the strings are set up. 3. The string bridge is suitable for 4‑string electric headless bass, so that the pitch is good when playing. 4. The height of the string bridge is just right, the left hand is easy to press the strings, and there will be no noise during playing. 5. The kit is very complete, equipped with screws and wrenches and other parts, easy to install. Specification: Item Type: Bass String Bridge Material: Zinc Alloy Suitable For: 4-string electric bass Bass String Bridge Size: Approx. 95 x 90 x 26mm / 3.7 x 3.5 x 1in Wrench Diameter: Approx.1.5mm / 0.1in 2.0mm / 0.1in 3.0mm / 0.1in 4mm / 0.2in . Package List: 1 x String Locking Nut1 x Headless Bass Bridge7 x Mount Screws1 x 1.5mm Wrench1 x 2.0mm Wrench1 x 3.0mm Wrench1 x 4.0mm Wrench