Description: Acoustic Guitar Sound Hole Humidifier Moisture Reservoir Musical Instrument Parts. Designed for keeping your guitar in the moderate humidity conditions, the humidifier releases moisture evenly and slowly inside your guitar to maintain the proper humidity level. You can add some water on the water absorbing sponge and put in into the hole cover and then it works. A must-have maintenance tool for your guitar. Material: ABS Size Chart: Sound Hole Diameter: 110mm/4.33inch Package Includes: 1 Piece Guitar Humidifier
