1、ZINC ALLOY MATERIAL: Our fixed bridge is constructed from premium zinc alloy, ensuring its strength and durability. The premium material contributes to the production of beautiful tones, making it perfect for 4 string electric bass guitars. 2、4 STRING BRIDGE WITH SADDLE: This bridge is designed specifically for top loading or string through body upgrades for jazz bass and accuracy bass guitars. It features a saddle and four cylindrical posts that can be individually adjusted for tone and action height. 3、ADJUSTABLE HEIGHTS WITH INDENTED SCREWS: Each height screw has indentations on the baseplate to prevent lateral movement when adjusting the height. This allows for accurate adjustments without compromising stability. 4、ENHANCED SUSTAIN WITH A HEAVIER AND THICKER BASEPLATE: Our fixed bridge features a heavier and thicker baseplate, along with a sturdy, string through, premium tailpiece. These additions contribute to increased sustain, allowing for a richer and more resonant sound. 5、EASY INSTALLATION: Our fixed bridge is designed for easy and reliable installation. It comes with screws and a wrench, making it simple to assemble and disassemble. Enjoy a hassle free installation process. 1 x Guitar Bridge7 x Screws1 x Hex Wrench Item Type: 4 String Electric Bass BridgeMaterial: Zinc AlloySuitable for: 4 String Electric Bass, GuitarSize: Approx. 86mm / 3.39in