As a training tool, the double spout portafilter is excellent for checking your tamping technique. Increased crema, better mouthfeel, and it’s just tastier. Kafvalubre espresso portafilters allow you to see the espresso as it exits the basket. This allows you to immediately identify any faults in your dosing or tamping technique. You may be tamping slightly unevenly without releasing it; with a 58mm espresso portafilter you will see espresso leaving one side of the basket before the other side instead of it appearing evenly. What Is Channeling? When you tamp your well-dosed grounds evenly inside the portafilter, you’ll force the water to seep uniformly through the puck, resulting in a balanced extraction. But if you rush the tamping process, your puck will have varying levels of compactness and resistance. This is bad because water will only pass through the areas, or “channels”, that have the least resistance. If this happens, you’ll be left with a chaotic cup that has both under-extracted and over-extracted tones. Compatible with La Marzocco Espresso machine, a tool to improve your barista skill. As the shot pulls, you can see the droplets of espresso forming from double spouts. You can then see the stream flowing down into your cup. It’s ! Product Feature Material: 18/8 Stainless Steel (#304), Plastic Weight: 583 g Size: 58mm portafilter Package Includes ---Double spout portafilter 58mm ---Non pressurized basket