【Application】Our aquarium hose adapter can connect and convert water pipes with different inner diameter. 【Multiple Options】Suitable for 12mm/20mm pipes, 16 pipes mm / 20 mm. 【Premium Material】This aquarium hose converter is made of good quality plastic material, which is wear-resistant, corrosion-resistant, durable. 【Easy to use】Easy to use, just insert the hose into the adapter.Nice accessory for the home aquarium.