Fit for Ninja CFP301 brewer basket,and compatible with Ninja CFP201,CFP300,CFP305 Dual Brew Pro System Coffee Makers,also fit most of 8-12 cup cone coffee machines, #4 pouring coffee drippers,and more coffee machines that required #4 cone coffee filters. #4 cone Coffee filter paper, its unique fan structure maximizes the filter area, ensuring uniform penetration of coffee, resulting in rich and delicate taste enjoyment. Natural Unbleached Paper.These size 4 cone paper filters are made of non-fluorescent pure pulp,no addition, no odor, reduce the damage to the original flavor of coffee,provide optimal extraction resulting,and ensures the purity and health of every drop of coffee, making your coffee journey more peaceful. Strong heat resistance, not easy to break, even under high temperature brewing can maintain a stable shape, effectively prevent the leakage of coffee grounds, to ensure that each cup of coffee is clear and free of impurities, taste pure coffee aroma. #4 Cone coffee paper filter is easily adapted to various drip coffee machines, whether manual drip or electric drip, can achieve quick installation and replacement, improve coffee production efficiency. These #4 cone coffee paper filter is the ideal choice for your daily coffee making, whether it is a personal daily consumption or a small party to share, you can easily cope with the uninterrupted coffee time. #4 Cone Coffee Paper Filters for Ninja Coffee Makers,Disposable Natural Unbleached Paper Filters for Pour Over and Drip Coffee Makers