Highlights The pull rod type circulating cigarette holder for filtration adopts the pneumatic jet principle. The cigarette smoke will run onto the cigarette tube wall at a high speed through two small holes, & the tar will turn into liquid & stay, so that the function of high-efficiency tar filtration is realized. The filtration adopts pure physics principle, & there are no chemical filtration matters. After smoking of 5-10 cigarettes, the pull rod filter must be cleaned. During the cleaning, please screw off the pull rod filter & cigarette holder counterclockwise to make the tar flow out thoroughly. Wipe it off with tissue paper. After being used for a period of time, the pull rod filter shall be dipped into warm water or alcohol. If the air hole is blocked, the steel wire can be used to eliminate the block. When storing the cigarette holder, please clean away the tar in the filter & keep it away from children. Specification Dimension (cm): 7 1 1 Shipping Weight (Kg): 0.0719 Package Contents 1 Cigarette Holder 1 Spare Mouthpiece 1 Steel Wire 2 Spare Rubber Ring 1