Universally Compatible: This reusable coffee filter fits for universal B30 B40 B50 B60 B70 Series etc Easy to use: No need to remove or swap out the filter holder, built-in permanent stainless steel micro-mesh filter Suitable for Models: The reusable k cups fit home B30 B40 B50 B60 B70 K10 MINI Plus, K15 K40/45 K55 K60/65 K70/75/79 series Healthy & Convenient to Use: The reusable k cup Made of stainless steel micro-mesh filter and plastic for durability,The twist top lid has already been a big improvement for durability and cleaning.No need to remove or swap out the filter holder Money Saving&Environmentally friendly: Using kcup refillable cup could save money up to 80% than buying disposable K Cup coffee pods. Significantly reduced in landfill Colour:grey Material:plastic Package Contents: 3 x filter elements Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Reusable K Cups for , Cup Coffee Filter Refillable Single Pods B30 B40 B50 Reusable K Cups for , Cup Coffee Filter Refillable Single Pods B30 B40 B50 Reusable K Cups for , Cup Coffee Filter Refillable Single Pods B30 B40 B50