Product name： ISTA Metal Co2 Flow Controller - 3 Ways #I-567
● for 4/6mm air line.
● Provides the convenience in distributing air flow up to 3 different tanks.
● you can supply Co2 to 3 aquariums, without having to purchase
additional Co2 tank!
● only for electronic regulators.
●Precisely adjust the rate of air flow.
●No air flow leakage.