This is a set of 6 snail-shaped water feeder filters (for pets) that remove impurities from water using a high-density microporous filter! I purchased these on Amazon. I am selling them because I no longer use the main unit! *The main unit is not included! - Brand: Angelpet - Model Name: Snail-shaped water feeder filter - Quantity: 6PCS - Filter Type: High Density Microporous Filter - Function: Remove impurities from water #WaterFeeder #Filter #PetSupplies