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Thread Starter 

I'm looking for the tape that is slightly porous, and is usually black in colour. 

It's the kind of tape found in Grado headphones (where the 10 holes are).

 

Been using substitutes such as bandages, thin gauze and various other tapes

but none of them has the right porosity. Will be using this for headphone modding.

 

Any, and all help appreciated.

 

Cheers,