Vauen pipe filters are 9mm in diameter. Inside this paper filter there is a carbon filtration system. According to many this is the best form of filter. The carbon takes away an emphatic amount of moisture away from the smoke and it removes much more tar than other filters.
Model: Dr Perl Junior Filters
Number of Packs: 1
Filters in a Pack: 170
My go to brand; actually, made in Germany; never again Chinese knock offs (just horrible); for me better than double ceramic ends.
This may be the best pipe filter on the market especially for Vauen pipes.
I have come to believe that the Dr. Perl 9mm charcoal filters are the best of the 9mm filters available. They work well and fit great and honestly do not alter a tobaccos taste, they do remove moisture and maybe cool just a bit. Make sure you place the white porcelain end towards your bowl and the blue end towards your mouth. The tin is just a nice way to keep them handy and is a nice bit of tobacciana itself.
Enjoy dealing with you guys.
Authentic European and not Hong Kong made junk.