Allow users to use their own gourmet ground coffee in a Keurig brewer Easy to clean. Can rinse clean under running water after each use. Good gift for coffee lovers. Fits Keurig home brewer models B30, B40, B50, B60, B70, K10, MINI Plus, K15, K40/45, K55, K60/65, K70/75/79 series. DOES NOT WORK with Keurig 2.0 or Commercial Brewer models K-Cup Supreme Plus, K150, K155, K150P, K130, B100P, B150, B130, B2000, B3000, B3000, K3000, K2500, K3500, K4000, Vue, or Rivo. Optimized for all brew sizes (4oz. to 12oz. depending on your brewer model)Rinse clean under running water after each use. DO NOT over fill the basket with ground coffee as it will overflow and spill. Only up to 3/4 of the way. Keurig, K-Cup, and 2.0 are registered trademarks of Keurig Green Mountain, Inc. This product and Sellers are not affiliated with Keurig Green Mountain, Inc