"transparent Pre-Filter bowel+1/4"Connector 2 in number is a very useful item for your household that will ensure that you and your precious family stay in pink of their health. The RO pre filter is a necessity if you want to keep your ROs membranes in top condition. The regular use of any Ro decreases its efficiency to some extent posing a threat of contamination. The best way to safeguard you against this danger is to use this pre filter that comes with a spanner, pipe and spun filter. It is compatible with all 10 inch filters like carbon pre filter, polyspun pre filter, Fluoride Pre Filter Cartridge, KDF Carbon Pre Filter Replacement Cartridge, Paper Pre Filter Cartridge, Sterasyl Filter for Tank Water and Ultracarb Water Filter for Tank Water