Doutop 6 mm aquarium hose/silicon tube with 2 check valves, for 4 mm socket, 5m long, transparent, silicone, for aquarium fish tank air pump

Description

Product description: 5m long, 6 mm outside and 4 mm inside, transparent air hose. Suitable for all aquarium air pump with 4 mm socket. Hose comes with 2 check valves. - The check valve prevents water from the aquarium from flowing through the air hose into the air pump in the event of a power failure or when removing filters or other air-driven accessories. Package contents: 1 x 5m aquarium silicone hose. 2 x check valve in red.