Easy to use: just change the guitar string and you can make a quick change. The operation is simple and practical. High quality materials: The outer case is made of high quality aluminum. The material used in the clamp is a protective silicone pad that protects the strings, protects the guitar and prevents the guitar from scratched. Scope: Suitable for a electric guitar and acoustic guitar, a ukulele banjo, an acoustic guitar and a mandolin. Pros: The design is sleek and elegant, and the material is and suitable for most guitar instruments. Does not affect pitch and sound quality. Product information: Name: Capo Material: aluminum Color: silver, black Weight: 100g The capo can be securely attached and easily adjusted. The key to creating guitar songs and songs quickly and easily. A must for any guitarist. Package Contents: 4 x guitar capo Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.