Features: 1.HEADLESS DESIGN: The bass string lock adopts a headless design, making the entire body more compact and lightweight, convenient to carry and play. 2.METAL MATERIALS: This string locking nut is made of premium metal materials, with good durability and sound performance, providing users with excellent playing experience. 3.EASY TO INSTALL: This string lock comes with accessories such as screws, making it easy for users to install and adjust. 4.FINE WORKMANSHIP: Well crafted in 39mm, and smoothly surface, this headless string lock has a comfortable feel and ensures a perfect fit. 5.IDEAL REPLACEMENT: Wonderful replacement for the old and damaged parts, attention to details, helps you improve the performance! specification:Item Type: Headless Bass String Locking Nut Material: Metal Size: Approx. 39mm / 1.54in PackageList: 1 x Headless Bass String Locking Nut 2 x Screw