If you are going to use your fittings to connect into a hydration bladder, you will need to splice your output hose into two pieces (following the instruction sheet that comes with your Hiker Pro). After splicing, put the male connector on the hose that is directly attached to the output of the Hiker Pro cartridge. Insert the female coupling onto the loose piece of hose; you can now quick-connect those hoses together. Insert the other male connector piece into the other end of the hose with the female coupling; that male connector can go right into your hydration bladder.