one all permanent filters are made from high-quality surgical grade stainless steel. Dishwasher safe environmentally friendly and designed to work with every coffee maker using standard filters these permanent filters are a great alternative to paper filters. Each comes with a 5 year manufacturer warranty.Features:Our one all 8-12 Cup Basket Filter fits all coffee makers using standard basket filters. This permanent coffee filter is environmentally friendly and dishwasher safe. Made from surgical steel.