Capo Guitar Capo-Quick Change Trigger Capo for 6-String Acoustic & Electric Guita and Ukulele Size: 8.0*7.8 *1.2 cm /3.2*3.1* 0.47 In Material: Aluminum alloy, Rubber . EASY TO MOVE - Super Fast to Change Between Frets. It Fits Perfectly Electric and Acoustic Guitars, Ukulele, Banjo, Folk Guitars and Mandolin NO FRET BUZZ - It uses a mechanical steel spring with internal memory to provide strength and fatigue resistance. NO SCRATCHES - High Quality Silicone Pad Will Protect Your Instrument Against Damage