1. Material: silicone
2. Function: prevent noise, whistling, weak sound and dustproof
3. Scope of application: folk/classical/electric guitar, etc.
4. Using 360-degree rotation technology, the volume of the sound hole can be controlled at will, and you can play it anywhere
5. Delicate and compact round design, looks comfortable and neat
6. It can be installed and removed quickly and easily, eliminating sound feedback and improving performance volume
7. The soft silicone has good toughness and does not damage the guitar finish
8. Size: large 10cm, small 8.6cm
9. Weight: about 70 grams for large; about 47 grams for small