Description

This is for a set of 4 (four) 3M vacuum tube dampers (i.e. when you purchase qty of 1 above, you get 4 tube dampers). These are designed for signal tubes only (such as 6DJ8, 12AX7 etc,, or 6SN7, 6SL7 etc.). NOT for rectifier or power tubes. They stretch to fit over the tube and then bond to the glass with heat from the tube. Do note that they are difficult to remove after use. My experience with them is that they are not really reusable after putting it on the tube.