- Compatibility: This 54mm three-ear bottomless portafilter is exclusively designed for the following Breville machines: Barista Pro (BES878), Barista Express Impress (BES876), Bambino Plus (BES500), Infuser (BES840), Barista Touch (BES880), Barista Express (BES870), Duo-Temp Pro (BES810), and Bambino (BES450). Ensure your machine model matches before purchasing to avoid compatibility issues. - Enhanced Extraction Visibility: The bottomless design allows you to monitor the entire espresso extraction process. This visibility helps identify and rectify issues related to grinding, distribution, or tamping, making it an essential tool for espresso enthusiasts looking to enhance their brew quality. - Uniform Water Distribution: The included filter promotes even water distribution over the coffee grounds, minimizing channeling and ensuring a consistent extraction. It also assists in keeping your machine's brewing head clean for better performance. - Premium Material Construction: Crafted from high-quality food-grade stainless steel, this portafilter offers exceptional durability. It guarantees that your espresso remains pure and free from contaminants, ensuring a better tasting experience. - 304 Stainless Steel Double Filter Basket: The robust double filter basket is made from durable 304 food-grade stainless steel, providing a contaminant-free espresso extraction while preserving the rich flavors of your coffee. Use Scenarios: 1. Home Brewing: Ideal for home baristas looking to refine their espresso-making skills and achieve café-quality results. 2. Coffee Workshops: Perfect for use in barista training sessions where observing the extraction process can enhance learning. 3. Espresso Competitions: A valuable tool for competitors needing precise control over extraction and presentation. This bottomless portafilter is designed to improve the quality and consistency of your espresso, making it a vital addition to your brewing toolkit.