Compatibility - this 54mm bottomless portafilter and 53mm distributor/tamper were designed to fit for the Express, Pro, Touch, Bambino Plus, Infuser and Duo-Temp Pro. BES870XL BES870BSXL BES78VSS BES880BSS High Volume Filter Basket Included - Included is a 21g filter basket. This is designed to increase the amount of coffee that you can brew in a double shot. This is meant to be an addition to the included filter basket that comes with your for machine. Improve Your Espresso Consistency - The Distributor allows you to evenly distribute the coffee and get a consistent tamp by adjusting the height. The bottomless portafilter allows you to see if there are any inconsistencies. This combo significantly increase your espresso quality. BONUS - We send a free bonus with every purchase. The protects your counter from scratches in the tamping process. Increased Crema - Removing the bottom off the portafilter allows crema to undisturbed into your portafilter, giving you a more creamy shot.