Product Name : Check Valve;Use for : Fish Tank, Aquarium
Hole Diameter : 1.8mm/ 0.07";Total Size : 5.3 x 1.5cm/ 2.08" x 0.59"(L*Max.D)
Material : Plastic;Color : Clear, Pink
Weight : 9g
Protect you air pump by preventing aquarium water from back siphoning during a power outage.
Place in your airline tubing between your air pump and aquarium water to prevent water returning down the air line.
Package Content : 2 Pcs x Aquarium Check Valve
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 +/- 1-3cm.