Description:<br> 5pcs 3cm Tube Dampers Silicone O-Rings for EL34 EL34B Audio Vacuum Amp<br>  <br> Specification:<br> Material: Silica Gel<br> Color: orange<br> Diameter: 3.4mm<br> Inner diameter: 3cm<br> Temperature range: 240\u2103<br> Suitable For: EL34 \/ 6P3P \/ 6N3C \/ 6L6 \/ 6CA7 3cm diameter tube.<br> Quantity: 5pcs<br>  <br> Features:<br> High temperature of 240 degrees， non-toxic environmental protection.<br> Can effectively reduce tube vibration.<br> Microphone effect and reduce noise.<br> Make sound cleaner， the effect is obvious.<br>  <br> Package Included:<br> 5pcs x 3mm Tube Silicone O-Rings<br>  <br> More Details: