Denicotea Reusable Cigarette Filter Holder 1 piece – 3.1/2″ – Black

3.1/2" long Why you should use exclusively Denicotea 9mm silica gel filters in your cigarette holders? Silica gel has a highly porous structure that can reduce tar and nicotine from tobacco smoke to a high extent, when used during smoking. By changing color from clear white to dark brown the effect is clearly shown, as well as indicating when the filter needs to be changed. Comes with 1 filter loaded - remove cap with a light twist.