Features: This premium brass bass nut enhances resonance, delivering superior tuning stability for your 4 string electric bass guitar, making it a must have upgrade for optimal sound quality. Crafted from good quality brass, it features adjustable height via screws and precisely grooved rollers tailored to each string's thickness, with exact dimensions of 38mm x 3.5mm x 4.5mm and a string spacing of 28.5mm for functionality. Ideal for bass guitarists, luthiers, and musicians seeking reliability replacement guitar parts to maintain or upgrade their instruments for consistent performances. Use this essential bass nut during routine repairs, or live gigs to ensuring smooth string movement and extended durability in any musical environment. The complete package includes a brass nut, base plate, and hexagonal wrench for easy installation, offering long lasting value with its polished finish that reduces friction and wear. Specifications: Dimension:3.8×0.36cm/1.5×0.14in 3.8×0.15cm/1.5×0.06in Component:Brass Package Includes: 1Set Bass Guitar Nut note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.