Refillable coffee filters for Keurig models: B10,B30,B31,B40, B44, B50, B55, B60, B66, B70, B77, B77, B79, B100,B130,B135,B140,B145,B150,B200,K10, K45, K65,K75, K145. DOES NOT WORK for Keurig Cuisinart version and K155, K250(After 2016). | Reusable coffee filters to replaces Keurig and all other reusable coffee filters for Keurig Home Single Cup Brewing Systems | Compatible Keurig 1.0 & 2.0, K200(Before 2016)K300, K350, K360, K450, K460, K500, K550, K560,K575(Does Not Work with Keurig Mini) | Use your own gourmet ground coffee in a Keurig brewer--Just fill the Reuseable filter with your favorite coffee and pop it into your brewer.....Just like regular k cups | Simply fill with your favorite coffee or tea and brew. Rinse with water when finished