2 Pcs Non-return Plastic Check Valves for Aquarium Fish Tank Air Pump Tropical Marine Clear

Way too small to fit on any hose, useless junk valve, the opening is about 1 millimeter big. It's a fraction of the required size to remain on a hose.

Very good quality, I receibed the very fast in a bubble wrap envelope. fits very well on my tubbing and seems to be very long lasting.

Took 1 star off because after I bought this product I realized that there are other packs of these kind of check valves for the same price with 10 pieces.

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