reusable k cups for keurig 1.0 & 2.0 brewers, stainless steel refillable mesh filter, eco-friendly coffee pods (pack of 4) maxware refillable coffee filters for keurig models: b10,b30,b31,b40, b44, b50, k55, b60, b66, b70, b77,b77,b79,b100,b130,b135,b140,b145,b150,b200,b1250,b1255,k10, k45, k65,k75, k145, k200,k300,k350,k360,k450,k460,k500,k550,k560,k575. does not work for keurig cuisinart version and k155, k250(after 2016)..reusable k cup replaces keurig k cups and all other reusable coffee filters for keurig home single cup brewing systems.compatible with keurig 1.0 & 2.0, k200(before2016) k300, k350, k400, k450, k460, k500, k550, k560.use your own gourmet ground coffee in a keurig brewer--just fill the reusable 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.