This is a homemade violin mute. It reduces the sound during practice. 【Features】 Not only does it provide a clear muting effect audibly, but the effect is also confirmed numerically through spectrum analysis. In the 1000-6000Hz range, which is the harmonic component that causes noise, there is a 5-10dB attenuation, meaning the sound is less than half as loud. I always use this when practicing. ARTINO and similar products that are placed on the bridge have a high muting effect, but they have drawbacks such as: - The contact point between the bow and strings is not visible when attached. - The fundamental tone you want to hear during practice is not audible. - Since it's only placed on the bridge, it can fall off, or cause problems if you put it in the case while attached. - It can leave marks or rubber stains on the bridge. - It's heavy. I made this to overcome these issues. The Quarto, which I am selling separately, had some instruments that couldn't be fitted because the parts were made larger to achieve muting. This time, I have made the parts smaller and provided clearance up to the E string. By bringing the parts as close to the strings as possible when attaching them to the instrument, a muting effect similar to the larger Quarto is achieved. 【How to Attach】 Attach the two parts so that 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. Finally, move the parts up as close as possible to the E string without touching it to increase the muting effect. 【Important Notes】 The height of this product (from the center of the bridge to the E string) is approximately 21mm, so it should be fine if you have a standard 4/4 violin bridge height. Some people have said they were able to use it on 1/2 or 1/4 violins, but I cannot guarantee it. In rare cases, even with a 4/4 violin, the height to the E string may not be sufficient due to the instrument's shape, so please check before ordering. Size: Approximately 42 x 21 x 5 mm. Please forgive any minor scratches from manufacturing. It may break if subjected to strong impact. 【From Customer Reviews】 - This is amazing!! - Unlike metal mutes, the sound is reduced quite naturally, which is good. - It's great to be able to practice without worrying about the mute slipping or falling and damaging the instrument, or the anxiety of not being able to see the contact point between the strings and the bow! (Please also take a look at other reviews)