This is a homemade violin mute. It reduces the sound during practice. It's larger than the Ottavo, a commercially available mute, so you can expect a greater sound-dampening effect. 【Features】 Not only is there a clear reduction in sound perceived by the ear, but the effect can also be confirmed numerically through spectrum analysis. The 1000-6000Hz range, which contains the harmonic components that cause noise, is attenuated by 5-10dB, meaning the sound is less than half as loud. I always use this when practicing, but I'm surprised by the loud sound when I occasionally forget to put it on ^^ ARTINO and similar mutes that sit on the bridge have a high sound-dampening effect, but they have drawbacks such as: ・The point of contact between the bow and strings is not visible when attached. ・The fundamental tone you want to hear during practice is not audible. ・Since it only sits on the bridge, it can be dropped, or cause problems if left on when putting the violin in its case. ・It can leave marks or rubber stains on the bridge. ・It's heavy. I made this to overcome those issues. 【How to Attach】 Attach the two parts so they sandwich the bridge. They are secured with strong magnets, so when attaching them to the bridge, slide the smaller part from the side to avoid impacting the bridge. Basically, the side with the sticker should face the fingerboard. If the parts come into contact with the strings, you can usually fix it by reversing the orientation. 【Important Notes】 The size of this product is approximately 42 x 21 x 5 mm and 56 x 26 x 5 mm. It should fit most 4/4 violins with a standard bridge height, but it may not be possible to attach it to fractional violins. If the height to the E string is insufficient, please consider the Ottavo, a different product. Please excuse any minor scratches from the manufacturing process. It may break if subjected to strong impacts. 【From Customer Reviews】 ・This is amazing!! ・Unlike metal mutes, the sound is reduced pretty much as is, which is great. ・It's great to be able to practice without worrying about the mute slipping or dropping and damaging the instrument, or the anxiety of not being able to see the contact point between the strings and the bow!