Featuring a fast and effective hollow fiber membrane filter, the Sawyer pointOne filter with bucket adapter allows you to make 5 gal. of clean drinking water in under 15 min. Simply install the filter to nearly any plastic bucket not included and youre setup with a large-volume gravity filtration system that is ideal for backcountry living. Filter physically removes particles, protozoa, and bacteria down to 0.1 micron in size, including giardia, salmonella and cryptosporidia. All Sawyer water filters exceed Environmental Protection Agency EPA recommendations for removal rates. Filter is fully field maintainable to ensure a fast flow of water system includes a back wash bulb and a faucet adapter for thorough back washing in the field and at home. All Sawyer water filters and purifiers come with a Million Gallon Guarantee, essentially eliminating the need to ever have to replace the filter cartridge. Includes hollow fiber filter, tubing, bucket adapter, hole cutter, faucet adapter, filter cleaner, filter hanger, and assembly instructions. Plastic bucket not included.