Our coffee filters are all made of environmentally friendly natural paper, unbleached,non-toxic and smelless. Round-shape ensures uniform extraction for pure coffee flavor. Good to remove bitter grounds and sediments, is essential in the process of brewing coffee.Perfectly for restaurants, coffee shops as well as home use! Coffee filter paper is strictly customized according to 20 seconds per 200 ml flow rate that ensures filtering coffee cleanly and quickly. 6cm Diameter Fits for Ice drop pot, mocha pot, coffee maker syringe coffee machine,or many other coffee makers.