Screw-in pollutant-reducing filters
 OCB activated carbon filter for the ultimate smoking pleasure
 With a diameter of 7mm, OCB's activated carbon filters are neither too thin nor too thick. The high-quality, purified activated carbon pellets ensure maximum filter performance while preserving the taste as best as possible.
 In our study, the ultimate activated carbon filter test, the OCB carbon filters take first place. Cool, gentle smoke with ideal draft and ceramic caps on both sides.