ALEGI 12 Feet Aquarium Airline Tubing Standard With 4 Air Stones And 4 Check Valves For Fish Tank Air Pump, Clear

Standard 3/16 ID x 1/4 OD Flexible Silicone Airline Tubing is for aquarium/Fish Tank/Hydroponics Check valves can prevent water from back siphoning. 12 Suction Cups - Make the Aquarium airline tubing firmly fixed on the glass wall of the aquarium Accessories Includes: 25ft Silicone Airline Tubing,4 x Return Valve,4 x Air Stone,8 x Connector and 12 x Suction Cup.