1、【High-quality Material】: Crafted with sturdy zinc alloy and iron, our Guitar Roller Nut ensures long-lasting performance and reliable string support. Its sturdy construction guarantees stability and enhances the overall sound quality of your instrument. 2、【Precise Design】: With a compact size of 43 * 11.9mm/1.7 * 0.5inch, our Guitar Roller Nut is designed to fit seamlessly onto most acoustic and electric guitars. The center distance between the two installation holes measures 26.5mm/1.1inch, ensuring easy installation and compatibility with various guitar models. 3、【Enhanced Performance】: Featuring advanced metal roller technology, our Guitar Roller Nut provides smooth string movement and minimizes friction. This allows for precise tuning and improves the sustain and tonal clarity of your instrument. Say goodbye to string binding and hello to effortless playing. 4、【Unique Aesthetics】: Our Guitar Roller Nut showcases a distinctive design that adds a touch of style to your instrument. Its sleek and modern appearance complements any guitar, be it a folk acoustic or an electric guitar. Stand out from the crowd and make a statement with this eye-catching accessory. 5、【Versatile Compatibility】: Suitable for both acoustic and electric guitars, our Guitar Roller Nut is a versatile addition to your musical arsenal. Whether you're a professional musician or a passionate hobbyist, this accessory is a must-have for achieving optimal string performance and unlocking your instrument's full potential.