1.Compatible with Breville Models:The 54mm bottomless portafilter is designed to perfectly fit a range of machines, including the Barista Pro, Express, Touch, Bambino Plus, Infuser, and Duo-Temp Pro and the Bre-ville series - BES840/BES870/BES875/BES878/BES880/BES500. 2.Ergonomic Handle: 54mm bottomless portafilter is made from natural rosewood, ing a smooth, ergonomic grip that feels comfortable and reduces strain on your wrist and hand. Each handle of the bottomless portafilter has its own unique color and grain, making every piece special and distinctive. Enjoy a premium coffee experience with a handle designed for both style and comfort! 3.Stainless Steel Basket:The filter basket is designed with fine holes for better extraction. And the filter basket is made of food-grade stainless steel, highly polished by handcrafted process to ensure a tight fit with the coffee maker. The detachable design makes it easier to clean, convenient to use and improve work efficiency. 4.Visualize the Extraction Process:The espresso portafilter allows you to see the coffee extraction clearly. Observe the flow rate, color changes, and evenness of the pour to better understand and adjust your grind size and tamping pressure.