Highlights Substantially retain TAR, NICOTINE, CO, & other harmful substance in cigarette. Ease symptoms caused by smoking, such as cough, over-phlegm, throat ache etc Enjoy the life caring for health. The copper-head pull rod type circulating cigarette holder for filtration adopts the " Small hole filter" principle. The cigarette smoke will run onto the cigarette tube wall at a high speed through two small holes, & the tar will be caused to deposit, cohere & 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 5-15 cigarettes, the copper-head pull rod filter must be cleaned. During the cleaning, please screw off the pull rod filter & cigarette holder to make the tar flow out thoroughly. After being used for a period of time, the pull rod filter shall be dipped into alcohol for 1-2 minutes, & then clean it with water. Specification Dimension (cm): 6.4 1 1 Shipping Weight (Kg): 0.051 Package Contents 1 Cigarette Holder 1 Spare Mouthpiece 1 Steel Wire 1