Sawyer SP2307 - Dual Threaded Mini Filter Twin PackThe Dual threaded MINI filter weighs less than 2 ounce, fits in the palm of your hand, and features a threaded output for cleaning coupling compatibility. Kit Includes: 2 dual threaded MINI water filters 2 cleaning couplings (SP150) 2 plungers only (no pouches). 0. 1 micron ABSOLUTE Hollow fiber membrane filter removes 99. 99999% of all bacteria, such as salmonella, cholera and E. coli; removes 99. 9999% of all protozoa (parasites), such as giardia