Elevate your coffee brewing game with the new Flow Control Filter Cap. This innovative accessory uses a pressure-actuated valve to eliminate drip through and maximize control over the brew process. Unlike others, this cap fits perfectly on AeroPress Original, AeroPress Go and AeroPress Clear coffee makers and can be used with metal and paper filters - together or separately. Now you can make espresso-like crema and experiment with coarser-ground coffee. Not compatible with AeroPress XL coffee maker.