Anti-fall-off Silicone Tubing：The PVC Tubing will come off from the air pump when the air pressure is too high or when it has been used for a long time.This may cause the fish to suffocate and die.
Anti-kink :Resistant to high and low temperatures, it will not harden or crack. It is suitable for both saltwater and freshwater.Safe for fish.
3/16" (4mm)ID Suitable for use in the aquarium category: air pumps, bubble stones, bubble filters, and sponge filters.
Silicone will turn into ashes when burned. It doesn't produce any odor during the burning process. You can conduct the test yourself after purchasing it.
