This box contains 30 activated 9mm charcoal filters for use in any pipe with a 9mm bore.
The actual diameter of the filter is 8.5mm, which means it may fit in some pipes that require a slimmer filter.
Highly absorbent and disposable - just throw away and replace when it changes colour.
Adsorba filters reduce tar and nicotine.
Adsorba filters ensure a dry and cool smoke.
Please insert filter with ceramic top facing bowl.