- BOTTOMLESS PORTAFILTER 51MM 2 EARS: Specifically designed for Delonghi ECP3420, EC155, BCO430, and EC260 coffee machines. Important Note: Not compatible with Delonghi La Spezialista EC9335, EC9665, EC9115, Dedica EC680/EC685, EC785, EC820, EC850, EC860, EC885, Capresso EC50, SMEG/EUPA espresso machines. - DETACHABLE BOTTOMLESS FILTER HOLDER: Features a convenient detachable design for quick assembly and cleaning. Easily swap out filter baskets as needed. Caution: Do not wash in a dishwasher to prevent discoloration of the wooden handle due to high temperatures. - USEFUL TIPS: Prevent splashing by measuring ground coffee accurately and distributing evenly. Experiment with various grind sizes to avoid coffee that is too fine or too coarse. A coffee doser can help compact the grounds more effectively. For additional tips, consider searching on YouTube. - STURDY AND ELEGANT CRAFTSMANSHIP: Constructed from food-grade stainless steel with a high-polish finish. The ergonomic walnut handle ensures comfortable use, though variations in texture may occur with different batches. - COFFEE MASTER'S TRAINING PARTNER: The bottomless design allows you to easily observe the extraction process, including the flow rate, color, and column stripes. It helps identify defects prior to extraction, enabling better control over uniformity and ultimately resulting in a richer, more consistent espresso. Applications: - Perfect for home baristas looking to refine their espresso technique. - Ideal for cafes aiming to enhance customer experience with visually engaging coffee preparation. - Useful for espresso enthusiasts wanting to perfect their brew by adjusting grind sizes and tamping techniques.