Planet Waves NS Guitar Capo, BlackNS Capo on fretboardNS Classical Capo on fretboardD'Addario/Planet Waves NS CaposThe D'Addario/Planet Waves NS Capo line offers multiple innovative and easy to use options that fit a wide array of instruments and player preferences.NS Guitar Capo ProThe NS Capo Pro is constructed from aircraft grade aluminum making it rugged enough to take a beating, but keeping it very lightweight on the fretboard. Equipped with a patented micrometer for tension adjustment, the NS Capo can be dialed in to ensure the proper force is being applied to the neck of the guitar. This feature makes dealing with buzzing notes and tuning issues a thing of the past. The NS Capo Pro is ideal for use on 6 and 12 string electric and acoustic guitars.NS Guitar Capo LiteThe NS Capo Lite uses a durable molded ABS thermoplastic construction to offer the most lightweight and cost effective choice. Ideal for use on all acoustic and electric 6 string guitars the NS Capo Lite can be adjusted to provide the exact tension need for your guitar. Designed for guitars with radiused fretboards, the NS Capo Lite greatly reduces the need to retune after applying your capo.NS Classical Guitar CapoThe NS Classical Guitar Capo, the third option within the NS Capo line, takes the design elements of the NS Capo Pro and tailors them to fit the needs of classical guitarists. With a contoured design and a flat radius intended specifically for the wider fretboard found on most classical guitars, the NS Classical Guitar Capo delivers the sleek construction and single handed operation of the NS design.NS Capo FeaturesMicrometer tension adjustment for buzz-free in-tune performance at every fret Single hand operation NS Capo Pro and Lite designed for acoustic and electric guitars with radiused fretboards NS Classical Guitar Capo designed for classical guitars with zero fretboard radius A patent-pending Ned Steinberger designTuned InThe importance of being able to play and stay in tune cannot be understated. With this in mind, the NS Capo design was crafted to allow every player to refine the tension the capo applies to their fretboard. This not only assures buzz-free clarity across all strings, but keeps strings from being pulled sharp by over-tensioning. In the long run this can also benefit the maintenance of your fretboard and save on upkeep.Capo Comparison ChartNS Capo Pro, BlackNS Capo Pro, SilverNS Classical Guitar CapoNS Capo LiteFor use on a 6 string guitar????For use on a 12 string guitar??Made of aircraft grade aluminum???Made of molded ABS thermoplastic?