br new high quality Features:Made of high-quality PVC material, soft, transparent, non-toxic, non-irritating od, safe comftable.Check to avoid carbon dioxide retention.The oxygen connect is capable of connecting the oxygen tube ventilat.The lightweight elastic belt is conducive to effective comftable use.The three-way oxygen tube is suitable f compressed air atomizers, which are usually used in hospitals, clubs, clinics, homes other places where atomized liquids are absbed. Specifications:Material: PVC Function:Negative pressure drain (suction) takeoverIt Can satisfy two people at the same f time inhaling oxygenScope of application: used to extract collect y fluids.Size:as the picture showsCol: Green or Write(optional)Quantity: 1set Note:No retail package.Please allow 0-1cm err due to manual measurement. pls make sure you do not mind befe you bid.Due to the difference between different monits, the picture may not reflect the actual col of the item. Thank you! Package includes:1 x Tube(other accessies demo in the picture is not included.)