Features: Make of brass, durability and small, precisions machined to ensuring accurate sound quality. You can control the height of the start and end strings by raising the screw of the nut, and obtain the string height you need. Easy to install, with preslotted features to keep your guitar in perfect pitchs. Suitable for 4 string bass guitars. Easy to use. Suitable for all types of guitarists, including beginners and professional performers, it can achieve good result in both practice and performances. Specifications: Component: Brass Size: about 38x7mm/1.5x0.28inch Package Includes: 1set 4 String Bass Guitar Nut note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.