Why Choose Bottomless Protafilter? Compared to regular portafilters, the 51mm 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 for Models: The 51mm bottomless portafilter is compatible with a variety of for machines, including 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 clean, ensuring a superior espresso experience. Even Coffee Distribution for Better Extraction: The espresso distribution tool features finely crafted 0.4mm stainless steel needles. These distribute coffee grounds evenly in the filter, promoting consistent extraction for a smoother, more flavorful espresso. Note:Due to different production batches, the color of wooden handle is different, which does not affect the use. Exquisite Craftsmanship: The portafilter is made from food-grade stainless steel with a polished for durability and style. The ergonomic handle is designed for comfortable use, with slight texture variations adding a unique touch to each batch. Specification:51mm Colour:As Shown Material:Stainless steel Package Contents: 1 * Portafilter 1 * Filter 1 * powder needle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.