The ultimate in discreet tuning, the NS Micro Clip-Free Tuner features a full-color display and metronome in a housing that blends with the aesthetics of any instrument. The included clip-free mount attaches directly to your instrument’s tuning machine using the existing screw hole (screws included) so your tuner is always at hand and visible only to you. *The Clip Free Tuner is designed to work with tuning machines with screw mounts