With a shorter fretting bar than a standard guitar capo, The Planet Waves Trio Partial Capo can be used three ways: banjos, mandolins, and part of the neck for special tunings (can also be used with guitars). The NS Trio Partial DCapo is the product of an ongoing collaboration between famed product designer Ned Steinberger and J. D"Addario & Company. It employs a sleek, ultra-light design for fast and accurate one-hand positioning on the instrument"s neck. Just turn the smooth, tactile dial to eliminate string buzzing and enjoy a perfect, in-tune performance. The Planet Waves capo"s fast, micrometer screw assures perfect pressure for buzz-free, in-tune performance at every fret. Lightweight, aerospace-grade aluminum adds virtually no weight to the instrument"s neck when in use.Ultra-light, aerospace-grade aluminum One-hand operation Fast, micrometer screw assures perfect pressure for buzz-free, in-tune performance at every fret A patent-pending Ned Steinberger design Capo can be used for partial tunings, banjos, and mandolins