Travel Berkey with Two 7" White Ceramic Filters Easy to assemble, use and clean. TheTravel Berkey is constructed of heavy duty polished stainless steel with no seams to rust or leak Filter lifespan of over 1,000 gallons for the set of two. Silver impregnated for self-sterilizing properties. No PRIMING REQUIRED Includes one stainless steel Travel Berkey, 2 - 7" ceramic filters,non-slip pad,and standard spigot The two 7 British Berkefled ceramic filters are WRAS approved and meet NSF standard 53 for turbity. designed for removal of Bacteria and Chlorine