These single serve reusable coffee filter baskets are universally designed for use in Keurig， Breville， Cuisinart and Mr. Coffee single serve brewers. Insert filter basket directly into your brewer there is no need to remove the K-cup filter holder from your coffee maker. Reusable filter baskets are a great alternative to disposable prepackaged coffee packs that allow you to brew your own coffee， save money and help the environment.