Duckbill Valves Compatible with Momcozy M5/M6/V1/V2, Electric Breast Pump Replacement Accessories for M5/M6/V1/V2

it’s too big size

Diaphragm are too thick and smaller than the original momcozy ones. I had to push them in hard, and it made my pumps leak milk all over my bra. Duckbills were good for like a week and already getting loose. I have the v1 model.

Yo estaba un poco indeciso si necesitaba obtener el de 19 o el de 21 pero evidentemente al probarlo con esta máquina Que déjame decirte bien suave y el de 21 me quedó mejor así que continúa utilizándolo.

I ordered these to have a few extras on my Momcozy M6 wearable pump. These fit perfectly and do the job. I like that they have the 21 mm marked on the flange itself and that they come in a small box so you can carry around with extra spares for the flange and also using it to carry the duckbill valves. Very convenient and portable, Recommended

Came as described

Love these inserts. They make it so easy to size down standard 24 mm flanges and are easy to remove and insert in a variety of flanges, so I can use one set for multiple pumps. Highly recommend.