Elevate your coffee brewing game with the Flow Control Filter Cap. This innovative accessory uses a pressure-actuated valve to eliminate drip through and maximize control over the brew process. This cap fits perfectly onAeroPress Original.AeroPress Go.AeroPress Go PlusandAeroPress Clearcoffeemakersand can be used with AeroPress metal and paper filters. Now you can create hundreds of recipes by experimenting with grind size and brew time.Not compatible with AeroPress XL coffee maker.