SHTFandGO Gravity Well Ultra Water Filter Purifier 9000+ Gallons with 3 Black Candle Filters Silver Impregnated Ceramic Filter Element to Kill Bacteria and 10 Micron Pre-Filter Sock to extend life of Element Fastest Gravity/Pressurized Filter Available upto 4 gallons per hour pressure assisted production (much faster than other gravity filters) .2-.5 microns removing bacteria, giardia, protozoa. Para-cord handle (can be easily unraveled for emergency cordage) Liquid Tight Lids and Scrubby to Clean the Ceramic Element