24 carat filter. 24 carat taste. Swissgold makes the finest permanent coffee filters. Do not compare these to the common "gold tone" filters on the market. Genuine Swissgold permanent coffee filters have real gold plating and a specially designed mesh to let flavor through while keeping grinds out. The KF 4 is a size 4 cone filter with a 6-12 cup capacity and a collapsible handle for easy removal. It's the perfect partner of your drip coffee maker, easy to clean and always ready for use. Save money - no more paper filters to purchase. Never worry about running out of filters again.