Fangrui Product Details [easy To Use]: Refillable Single For K Cup Can Be Seamlessly Installed In Every For Keurig Machine Without The Need To Change The Bracket Or Make Any Type Of Tampering. [more Sturdy And Tight]: Reusable K-cups Filter Has A Sturdy Structure And A Tight Lid, One-piece Design, You Will Taste The High-quality Coffee You Have Had Before! [premium Quality]: Reusable For K Cups Coffee Grounds Filter Very Well, Filter Out Most Of The Natural Oils, And Bring A Smooth And Rich Taste. There Is No More Sediment At The Bottom Of The Cup. [eco Friendly]: For Keurig Filters Are Made Of High-quality Stainless Steel Micro-mesh, Environmentally Friendly And Safe Materials. These High-density And Bpa-free Mesh Filters Will Not Rust Or Change Color. [compatible With]: For Keurig 1.0, 2.0 (older Models Sensors May Not Read The Cups.) Models: K200, K250, K300, K350, K360, K450, K460, K500, K550, K560, K15, K31, K40, K44, K45, K50, K60, K66, K70, K77, K80, K100, B31, B40, B44, B50, B60, B66, B70, B77, B100, B140, B200 As