Ditch those single-use K-Cups and one-time-use coffee filters in favor of washable, reusable coffee filters! This basket coffee filter fits either a 3 - 6 cup coffee filter or a 6 - 12 cup coffee filter. Simply rinse clean after use and, once every two months, boil for 10 minutes to ensure it stays sanitary. Each pack of 2 can last up to 2 years.