This is a serious piece of dampening kit - as in it really muffles the sound to allow you to practice late at night! Seems to be a nice snug fit over my bridge and holds it shape well. Looks like a cheap piece of kit but invaluable!
I got this in order to use it with a 5-string electric cello so I did use a knife to carve one end open. This didn't seem to affect the sound, so the review is probably still relevant.
It's a decent basic rubber mute. It doesn't dampen the sound as much as wood or metal does but it changes the sound in similar fashion (although each material does sound slightly different). So if you are considering getting a mute in order to be able to practice at night, this might not be the best one for you. On the other hand if you only want to achieve the muted sound, it's well worth considering. It is easier to install and take off than wood or metal ones and doesn't make dents in the bridge.
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