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 54mm 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. 54mm double spout portafilters, a perfect 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 incredible! Compatible with Breville Machine Model: - Compatible with Breville BES870XL Barista Express Espresso Machine - Compatible with Breville BES870BSXL Barista Express Espresso Machine - Compatible with Breville BES878BSS Barista Pro Espresso Machine - Compatible with Breville BES880BSS Barista Touch Espresso Machine - Compatible with Breville BES840XL Infuser Espresso Machine - Compatible with Breville BES500BSS Bambino Plus Espresso Machine - Compatible with Breville BES810BSS Duo Temp Pro Espresso Machine Product Feature Material: 18/8 Stainless Steel(#304), natural wood Weight: 483 g Size: 54mm portafilter Package Includes ---Double spout portafilter 54mm ---Non pressurized basket