These are incredibly handy to have around, just in case! Not only to replace what comes with the pump, but also to have to reduce cleaning during the day. This comes as a complete PAIR of replacement cups, including 2x duckbill valves, 2x silicone diaphragms, 2x 24mm double-sealed silicone flanges, 2x linkers (internal plastic piece), and 2x collection cups. New, never used but have are no longer in their original box as they have been sterilized and stored. These retail for $35 each! Get a pair for way less! **Please note these cups are photographed with the breast pump box just to show the model. Does NOT come with a pump, just the pair of cups. Baby, infant, mother, woman, breast feeding, breastmilk, breast milk, pumping