Heysland 3 in 1 Guitar Humidifier Moisture Reservoir Dehumidifier Acoustic Guitar Sound Hole Cover for Diameter 100 to103mm Soun

Specifications: Material: Plastic + Rubber Compatible Sound Hole Size: Dia 100-103mm / 3.937-4.055in Item Size: 11 * 1cm / 4.3 * 0.4oz Item Weight: 53g / 1.9oz Package Size: 14 * 12 * 3cm / 5.5 * 4.7 * 1.2in Package Weight: 102g / 3.6oz Note: This sound hole cover is not suitable for guitars whose fretboard has reached the sound hole. The guitar showed in the picture is not included. Package List: 1 * Sound Hole Cover 1 * Sponge 1 * Bag of Desiccant