Easy to store and carry: Each sliding guitar capo is well-sized and lightweight, won't tax your stringed instruments, and fits easily in your bag. Easy to change pitch: These sliding guitar capos allow changing between frets, helping you get the right tone you need. multiple usage: You can use these rolling capos to tune folk classic acoustic guitars, ukuleles, mandolins, banjos, and more. A practical gift to share with your family or friends who have string instruments for their convenience. Specification: Material: Stainless Steel and Rubber Size: Approx. Length 9.8cm / 3.86", Width 4cm / 1.57", Height 2.5cm / 0.98" Colour: Black The package includes: 2 Guitar Roll Capos Reminder: Capo How many strings you can use depends entirely on the size of the guitar neck, so check the size before buying. It may take a bit of time and practice to get used to this capo, so be patient.