Product Name : Aquarium Air Valve;Hose Connector Diameter : 5mm / 0.2"
Overall Size(Approx) : 47 x 23mm / 1.9" x 0.9"(L*W);Material : Plastic
Color : Gray/Yellow/White
Weight : 39g

The air valves are for fish tank aquarium use.
Help to increase oxygen and keep air fresh, create healthy environment for your fish.
Easy to connect hose.

Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.