Model Number:Health Gear2i3x1eourh Product Dimensions:10.9 x 10.9 x 1.3 cm; 78 Grams Material:Rubber Special Features:Lightweight Item Weight:78 g Features: - Made of high quality rubber material, eco-friendly and durable for long service time. - Soft and elastic, won't hurt the surface of guitar, not easy to break. - Small size and light weight, convenient to store and use, easy to install and remove. - Eliminate needless echo and enhance stage volume without disrupting placement or performance. - Fits for 38'' / 39'' Acoustic Guitar Aperture, suitable for amateur guitarists or professional guitarists. Specification: Condition: 100% Brand New Material: Rubber Color: Black Suitable for 38'' / 39'' Acoustic Guitar Aperture Weight: Approx. 77g Package Included: 1 * Guitar Sound Hole Cover [Guitar Soundhole Cover]: A great tool for the guitar enthusiast, eliminate feedback and enhance stage volume professionally [Material]: Made of high quality rubber material, soft and elastic, won't hurt the surface of guitar, not easy to break [Easy to Use]: Easy to install and quickly remove, with no instrument modification needed [Application]: Fits for 38'' / 39'' Acoustic Guitar Aperture, suitable for amateur guitarists or professional guitarists [100% Satisfaction]: If you have any question about this item, please feel free to contact us, we will help you within 24 hours on week days [Guitar Soundhole Cover] [Material] [Easy to Use] [Application] [100% Satisfaction]