Elvie Pump Bundle! Comes with: - 2 hubs, replaced by the MFR in July of 2023, and only used 5 to 10 times after replacement - 6 collectors, each with duckbill attachment pieces - 4 flanges, 2 "square" and 2 "circle", which I believe is 21 and 24 mm - 4 suction pieces - 5 duckbills - 5 lids for the collectors - 2 unused bra strap connectors ALL PIECES WERE PURCHASED WITH THE HUBS, AND USED FOR A VERY SHORT PERIOD. I only stopped using because I switched to formula feeding.