Usage Tips:2 Pack guitar capo: you will get 2 pack guitar rolling capos coming in black, each of them is approx. 9.8 cm or 3.86 inch in length, 4 cm or 1.57 inch in width and 2.5 cm or 0.98 inch in height, great gifts to your families or friends who like playing the guitaror other instruments One-handed design: the sliding guitar capo rolls up and down the fretboard without annoyance of resetting it, easily making a change between frets, especially when compared to a traditional style capo When not in use, it could be conveniently parkedon the guitar's headstock No fret buzz: this adjustable guitar capo can roll the capo seamlessly to make the tuning stay stable and won't pinch the sound out of tune Just move the roller from fret to fret by your thumb, a different change of tune would produce Lightweight and durable: the slide capo is made of stainless steel and rubber, it's approx. 55 g in weight, strong, lightweight and durable The spring provides a right amount of tension, the soft rubber roller won't destroy guitar strings and can avoidscratches, although it may take a little time to adapt to this capo Fit most string instruments: this rolling capo can work well with standard 4 to 6 string guitars, it's suitable for most string instruments like folk classic acoustic electric guitars, ukuleles, mandolins and banjos But how many strings could the capouse with depends on the size of the guitar neck, please check the size before purchasing Easy to store and carry: Each sliding guitar capo comes in proper size and light weigh, will not burden your string instruments and can be kept in a bag easily. Easy to change the tone: These glider guitar capos allow to make a change between frets, helping you to get a proper tone you want. Wide usages: You can use these rolling capos to tune tones of folk classic acoustic electric guitars, ukuleles, mandolins and banjos, etc. Practical gifts to share with your families or friends who have string instruments, bringing convenience to them. Specifications: Material: stainless steel and rubber Size: approx. 9.8 cm or 3.86 inch in length, 4 cm or 1.57 inch in width and 2.5 cm or 0.98 inch in height Color: black Package includes: 2 x Guitar rolling capos Warm notes: How many strings could the capo use with depends entirely on the size of the guitar neck, so please check the size before purchasing. It may take a little time and practice to adapt to this capo, please be patient.