The Hydro Guard HDG-CB6-14 CB6 Carbon Block Water Filter Replacement Cartridge is a white, 1/4″ port size filter made of coconut shell carbon block material. It is designed to filter out sediment, cryptosporidium, giardia, cysts, asbestos, and chlorine taste. With a micron rating of 0.5, this cartridge is compatible with the Hydro Guard HDG-CB6-14 model and is made in India. It provides clean and safe water for your household needs.