Food Grade Material: These espresso filters are from natural puree and have good air permeability, strength and water permeability. Every coffee lover should have this! Wide application: Whether or in the , you can enjoy fresh coffee at any time, also suitable for restaurants and coffee shops. A useful tool for coffee lovers too! Package Contents: You receive 400 sheets of unbleached coffee filters with a diameter of 3.75 inches and a center hole of 0.39 inches. These replacement paper filters come in a clear sealed bag. Suitable for banquets, parties, restaurants and families, etc. Our premium coffee paper filters are suitable for Bozeman Percolator, vintage coffee pots, espresso machines, and espresso machines. Providing optimal extraction results, you get a cup of rich, delicious, bitter-free coffee. HIGH QUALITY FILTER: Use this coffee filter to improve the purity of your coffee while brewing. Effectively removes all tiny impurities, oils and bitterness from coffee while maintaining the style of the coffee, making the coffee taste better.