Specification: Ultra lightweight Aluminum Alloy with air-craft grade. Special steel spring with stable physical force, and the product has a lifetime warranty. With the high-quality silicon pad, it fixes the string very tight but no hurt to the guitars. Exellent mechanics structure design, you can use it with one hand and switch to other frets easily. Suitable for Acoustic Guitar,Electrick Guitar, Classic Guitar, Ukulele,Bass,Banjo,Mandolin. Material: Air-Craft Grade Aluminum Alloy Net Weight:50g Colour: Black,Silver,Red,Purple,Blue |