Amazon has the Keurig My K-Cup Replacement Coffee Filter Set fits B30 B40 B50 B60 B70 series
This is an actual Keurig branded K-Cup but you aren’t getting the box which is why it’s so inexpensive.
I ordered 2 of them!
Details:
- 3-piece replacement filter set in a sealed pouch with instruction label attached. Not in ziplock bag or retail box.
- Filter housing is color gray.
- Allows users to use their own gourmet ground coffee in a Keurig brewer
- Fits Keurig home brewers B30 B40 B50 B60 B70 series. Does not fit VUE, B130, B131, Office Pro or other commercial models. B31 please make sure existing K-cup holder is removable first.
- Rinse clean under running water after each use.