Enhance your bass guitar's tone and playability with this precision-engineered 38mm bell brass nut. Designed specifically for 4-string bass guitars, this adjustable nut allows fine-tuning of string height for optimal action and playing comfort. The split regulation design enables precise string spacing adjustments, ensuring consistent string-to-string separation and improved intonation. Crafted from durable bell brass material, this nut delivers excellent sustain and bright tonal characteristics while maintaining long-term stability. The 38mm width provides a perfect fit for standard 4-string bass guitars, making it an ideal replacement or upgrade part. Whether you're a professional bassist or an enthusiast looking to improve your instrument's performance, this adjustable nut offers the flexibility to achieve your desired setup.