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. 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! 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. Wide application: Whether or in the office, you can enjoy fresh coffee at any time, also suitable for restaurants and coffee shops. A useful tool for coffee lovers too! 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