Bottomless 54mm Portafilter with Puck Screen and Rosewood ✔️ Single 54mm bottomless portafilter with rosewood handle The bottomless 54mm portafilter with puck screen and a rosewood handle is built to fit 54 mm Barista Series machines, including BES870XL, BES870BSXL, BES878BSS, BES880BSS, BES450BSS, BES810BSS, and BES840XL. This setup lets you watch the extraction as it happens, helping you tighten grind size, distribution, and tamping for a cleaner, more consistent espresso. ✅ Fits 54 mm Barista Series including BES870XL BES870BSXL BES878BSS BES880BSS BES450BSS BES810BSS BES840XL ✅ Puck screen included: 1.7 mm thick, 150 μm mesh to keep shower screen clean ✅ Food-grade stainless steel head and natural rosewood handle for ergonomic grip ✅ Improves espresso purity by allowing visual inspection of extraction and distribution ✅ Note: wood handle should stay dry and is not dishwasher safe 💡 What is a bottomless portafilter used for in espresso brewing? Answer: It's handy for seeing the extraction and tuning grind, distribution, and tamping. - bottomless portafilter helps optimize espresso extraction by showing flow and any channeling - puck screen and 54mm compatibility improve even water distribution in Barista Series machines - handy for tuning grind size, dose, and tamping to achieve balanced shots