304 Stainless SteelOur coffee filter is made of 304 gold-plated steel mesh. You can safely use permanent coffee filters. The permanent coffee filter is corrosion and rust resistant, acid and alkali resistant, heat resistant and wear resistant, soft and thick, strong and durable. Fine Filtration: 100 mesh filter, fine mesh, good air permeability and uniform precision to ensure the filtering of finer particles. Helps you make smooth and full-bodied coffee, much better than filter paper. With Plastic Handle: Our coffee filter has a plastic handle, which is convenient for you to adjust the filter while making coffee. After making coffee, you can use this handle to pour out the coffee residue and clean the filter. Reusable: The mesh coffee basket filter is reusable, saving a lot of costs, which is more environmentally friendly and economical than the paper filter. With acid and alkali properties, wear-resistant, soft and thick, sturdy and durable.