【Soundhole Cover】 Soundhole size: 100mm *Please carefully check the size of your soundhole. 【String Mute】 Size: 7.6×5.8cm Weight: 17g Practice tool for acoustic guitar. Made with silicone material of moderate softness. Significantly reduces volume, muffles/silences sound, allowing you to practice guitar at your leisure without disturbing others. The soundhole cover cuts the volume by about 20% with almost no change in pitch or tone. The string mute produces almost no sound, so you can practice strumming or left-hand techniques without worry. *Can also be sold separately. Please inquire.