ECM Bottomless Portafilter standard plated The Bottomless Portafilter is a must-have tool, if you want to watch perfection of coffee extraction at its best. A bottomless portafilter clearly exhibits how the extraction is progressing, so that you could make required changes on time to achieve the perfect extraction. This equipment is simply marvelous for training purpose since you can easily notice if channeling occurs - a sign of uneven tamping or grind levels. Its excellent for pulling a perfect shot of espresso every time. This chrome-plated 58mm portafilter can be used with a single, double or triple shot basket. *Triple Basket Included.