Easily Make Good Coffee: Reusable stainless steel pour over coffee cone dripper for delicious artisanal barista quality coffee. A slow drip makes the aroma and flavor you pour on your coffee more intense. Universal: Stainless steel coffee filters are the best alternative to disposable paper filters. The flexibility makes it easy to fit on all coffee mugs within the 4" diameter opening. Fits most cups, mugs and carafe. Portable: Drip coffee filters are used in the office, worksite, camping or at home. Let you enjoy the last drop of pour-through coffee as a portable coffee machine. Eco-friendly: A reusable cup of paperless coffee is poured onto the dripper; save money and reduce your footprint with a zero-waste coffee maker. High-quality Material: Our fine mesh stainless steel coffee filter is made of the quality stainless steel without using paper filters; the bottom base will stay on and not break; the extra fine wire mesh at the lower part of the filter ensure no grounds end up in your cup.