Aquarium Air Pump Non-Return Check Valve 5mm Dia 10 Pcs Red Clear Product Name : Aquarium Check Valve;Use for : Fish Tank , Aquarium ValveOutsideDia : 5mm / 0.2";Overall Size : 36x 19mm/ 1.4" x 0.75"(L*D) Material : Plastic;Color : Red , Clear Weight : 23g Package Content : 10 xAquariumCheckValve