D'Addario Humidipak Automatic Humidity Control System Tuners A patented micrometer adjustment mechanism

A patented micrometer adjustment mechanism allows the player to dial in the exact tension needed for your guitar

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D'Addario Humidipak Automatic Humidity Control System Tuners A patented micrometer adjustment mechanismD'Addario Humidipak is the only maintenance free, two way humidity control system for guitar. It automatically maintains the optimal 45% 50% relative humidity level within your instrument case, eliminating the guesswork and potential mess related to refilling a humidifier. No more manual adjustments based on seasonal changes, geographic locations, temperature, or other factors. Note: Humidipak is designed for restoring and maintaining instrument