The Fellow Prismo is a pressure-actuated valve designed to be used with the AeroPress Coffee Maker. This attachment allows for a buildup of pressure to create espresso-style coffee and creates a no-drip seal for a full immersion brew. The reusable 70-micron etched filter stops sludge in its tracks and eliminates the need for paper filters.  The valve’s small aperture also fits directly over an espresso shot glass.
 
Features
The pressure-actuated valve stays sealed as you press down.
No-drip seal.
Reusable 150 microns etched fine stainless steel filter.