Function Introduction As we All know,the tone will be wrong if the capo is nipped tightly.Thus,it is a very important element in the design of guitar capo how to make the power of the capo just right. This capo combine the strength,accuracy,speed and easiness of use perfectly by a distinctive Central Locking Mechanism. Product Parameters Material: Zinc Alloy(Capo Body) Silica gel(Capo Head) Use:Change tone Suitable for:Guitar,Electric Guitar,Ukulele Color:Silver,Red bronze,Antique bronze Size:Length 85mm,Width 58mm Product Details High quality rubber is soft,has excellent resilience.It is particularly designed for simulating the feeling of fingertip,not sticking strings. Protect the guitar neck and make the pitch accurate. Roller design plays a good anti-slip effect,reducing rub in the using of product,which highly raise the use life of product.