My k-cup coffee filter. A reusable coffee filter that allows consumers to use their favorite ground coffee in the Mini Plus B31 (SKU 653652), Elite B40, Special Edition B60 (SKU 653643), and Platinum B70 Keurig Single cup home brewing systems. Made of mesh metal filter with durable plastic framing. The unit can hold up to about 2 tablespoons of ground coffee. Simply insert the adapter piece into the Keurig brewer, add your favorite coffee to the My K-Cup filter, insert the filter into the adapter piece, and you are ready to brew.