When you buy Small or X-Small Pumpin Pals you automatically receive a pair of these collar rings.  The allow you to connect the soft silicone Small and X-Small Pumpin Pal flanges to your hard plastic pumping parts.  However, you may lose one of those received, or you may feel it's time to replace your parts for whatever reason.

These are not needed for the Medium, Large, or X-Large flanges.

Pumpin' Pal Replacement Collar Rings for X-Small and Small Flanges

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