Item Description: T-shaped regulator valve; can adjuste the air flow freely. Usage: cut an oxygen tube into two parts,inserting them into the ends of the  product respectively; twist the adjustment nut and the air flow can be changed. Two-Way/Three-Way Plastic Valve can be used as an in-line valve to control air flow from pump Help to increase oxygen and keep air fresh, create healthy environment for your fish Easy to connect hose   Tips: It is normal for product color to have dark and light color difference.

Specification:
Material: plastic
Color: Yellow
Size: about 3.5-4.8 cm long

Product specifications: 
Inner diameter: about 2-4 mm

Outer diameter: about 3-6 mm 
Qty: 10Pcs