Why Choose Bottomless Protafilter? Compared to regular portafilters, the 54mm bottomless portafilter allows you to better assess the uniformity of extraction. By observing the flow of coffee and detecting channeling, it helps improve extraction quality. This tool is great for both beginners and professional baristas looking to refine their skills. Widely Compatible with Breville Models: The YITIHOME 54mm bottomless portafilter is compatible with a variety of Breville machines, including Barista Express, Pro, Touch, Bambino Plus, Duo Temp Pro, Infuser, Impress 876, and Sage models such as BES450, BES500, BES810, BES840, BES870 and BES878. Premium Stainless Steel Filter Basket: Crafted with fine, evenly distributed holes, the stainless steel filter basket ensures consistent coffee filtration. Its fully detachable design makes it easy to clean, improving convenience and work efficiency. Enhanced Espresso Brewing with Puck Screen: The included stainless steel espresso puck screen complements your brewing process. It enhances water distribution, reduces channeling, and keeps the group head clean, ensuring a superior espresso experience. Even Coffee Distribution for Better Extraction: The espresso distribution tool features 8 finely crafted 0.4mm stainless steel needles. These distribute coffee grounds evenly in the filter, promoting consistent extraction for a smoother, more flavorful espresso. Exquisite Craftsmanship: The portafilter head is made from food-grade stainless steel with a polished finish for durability and style. The ergonomic handle is designed for comfortable use, with slight texture variations adding a unique touch to each batch.