uxcell 34 in 1 5mm Connect Dia Aquarium Air Pump Check Valve Tube Connector

This package included 3 kinds of air valves, 23 pcs 3 way tube connectors, 3 Pcs white tube connector, 8 Pcs straight  tube connectors. Easy and convenient to install. Fit to use with 5mm aquarium air line tubing. 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.