ITEM NAME:Guitar Auxiliary Capo Glider Metal Rolling Guitar Capo Sliding Tuning Cap 3C Features: 1Pc rolling capo for 6-string guitar. Made by anti-rust black carbon steel. The glider is quick and easy to use, simply remove the end cap and center the glider on the fret board. With the glider rolling capo, you say good-bye to tuning problems. When you're not using the glider, simply store it by rolling it up over the nut. When you need it again, roll it back out. Suitable for wood guitar and electric guitar. Specifications: Material: Metal Item Size: 110 * 60 * 30mm / 4.33 * 2.36 * 1.18in Color:Black Package List: 1 * Guitar Capo Note: Transition: 1cm=10mm=0.39inch Please allow 1-3mm error due to manual measurement..The glider is quick and easy to use, simply remove the end cap and center the glider on the fret board. With the glider rolling capo, you say good-bye to tuning problems. When you need it again, roll it back out.