Includes: (3 pcs) Disc Filter (Water) (RPI Part #DSF005), Luer Lock (Male x 5/32" Barb) (RPI Part #RPF907), and Luer Lock (Female x 1/8" Barb) (RPI Part #RPF975) Replace the Disc Filter (Water) every 3 months or when the water filter becomes discolored to prevent reduced water flow to the system.