2 Pack, Single Serve Replacement Filter, Universally Must Be Used With My K-Cup & One All Brand Reusable Single Serve Coffee Filter Systems, Fits All Coffeemakers Using The K-Cup Technology, Including Keurig, Breville, Cuisinart & Mr. Coffee, You Can Use Your Own Coffee In Your Brewing System & Save Money, Not Designed To Be Used In Your Brewer Without Either Of The Above Mentioned Systems.