Material stainless steel material】 Our aquarium hose adapter adopts stainless steel material, wear resistance and corrosion resistance, good performance, more reliable to use. 【2 Style optional】Inner diameter: 12mm/0.47in to 16mm/0.63in, meeting your needs. 【Easy to use】 Applicable to all kinds of water pipes, pipe transfer. Easy to use, just insert the hose into the adapter. Nice accessory for the home aquarium. 【Long life expectancy】 Reliable to use, long service life, not easy to be damaged, and you can use it for a long time.