The concert mute by Wmutes is specially designed to produce a high quality muted sound for your instrument.
The amount of muted sound is similar to a standard mute, but its design and materials produce a much richer, stable and focused sound.
Made of an especially refined bronze, Wmutes are plated with gold (1mc 24k), ruthenium or silver with the same resulting sound quality. 
Choose also between a mate or bright finish of the piece.
A thin layer of velvet allows a smooth fitting on the bridge, not staining it at all. The hold on process is absolutely silent and save.
Easy attachment also on the string while not using it, not jumping neither generating any vibration or sound alteration of your instrument.