Cone Coffee Drip Filters 304 Stainless Steel Double-layer Coffee Drip Filtration Rack No Filter Paper Coffeeware Kitchen Gadgets. Brew A Perfect Cup of Coffee: With our this coffee filter, you can get a perfect cup of coffee: the double-layer stainless steel filter will not absorb the oil or flavor in the coffee beans like traditional filters, ensuring every Delicious coffee can be enjoyed in a mug or in a small jug.