DESIGNED FOR USE ON CLASSICAL GUITARS WITH FLAT (NON-RADIUSED) FRETBOARDS. MICROMETER TENSION ADJUSTMENT ASSURES BUZZ-FREE IN-TUNE PERFORMANCE AT EVERY FRET. MICROMETER TENSION ADJUSTMENT ASSURES BUZZ-FREE IN-TUNE PERFORMANCE AT EVERY FRET. TRIGGER GEOMETRY OFFERS EASY USE AND EVEN CLAMPING TENSION. LIGHTWEIGHT AIRCRAFT-GRADE ALUMINUM CONSTRUCTION. INTEGRATED PICK HOLDER. INCLUDES MICRO TUNER MOUNTING BRACKET