Compact copper practice mute for viola that also functions as a wolf tone tube for cello and violin Key benefits Reduces playing volume for quiet practice and rehearsal while preserving tone clarity and string response. Dual function: serves as a viola practice mute and can be used as a wolf tone tube to reduce or stabilize wolf tones on cello and violin. Durable copper construction with good craftsmanship and a smooth, elegant surface for reliable long term use. What makes it useful Practical and durable: solid copper material resists wear and keeps its shape through frequent use. Clean finish and refined appearance make it suitable as an instrument part or a gift for musicians. Simple, unobtrusive design that focuses on function without altering instrument setup. Compatibility and performance Intended for use with viola as a practice mute. Applicable as a wolf tone tube for cello and violin when temporary wolf tone control is required. Designed to work with standard string instrument setups; offers consistent damping and resonance adjustment without complex installation. Typical use scenarios Home practice: quickly attach the mute to the bridge to lower volume during apartment practice or late night sessions. Rehearsal and travel: carry in an accessory case for on the fly damping when rehearsing in confined spaces or performing in close quarters. Wolf tone control: place the tube on a problem string during practice or performance to help reduce undesirable resonance. What you get A single copper mute/tube with a smooth, elegant finish and sturdy construction, suitable as a functional accessory or a thoughtful gift for family and friends who play string instruments.