What's in the box:

Flanger FS-08 Guitar Soundhole Sound Hole Cover Block Feedback Buffer Black for EQ Acoustic Folk Guitars

Features:
Sound hole cover designed for EQ folk guitars(sound hole dia.10cm).
For eliminating unwanted feedback in amplified live performance.
Also for Adjusting the guitar volume by rotating the backside cover.
Quick and easy to install & remove, helpful to protect the sound hole.
Soft rubber covers the insert edge, no damage to your guitar.

Specifications:
Material: Plastic + Rubber
Compatible Sound Hole Size: Dia 10cm / 3.9in
Item Size: 11 * 1.5cm / 4.3 * 0.6oz
Item Weight: 48g / 1.7oz
Package Size: 14 * 12 * 3cm / 5.5 * 4.7 * 1.2in
Package Weight: 71g / 2.5oz

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