Beginnerfriendly and consistent espresso distribution Easy to learn: helps beginners reach extraction depth by simply setting the extraction depth, making espresso preparation clearer and more repeatable. Handsoff depth control: the design eliminates the need for manual depth adjustments. internal rubber rings maintain a stable height for reliable performance. Durable and versatile: made from 304 stainless steel and available in three sizes to fit most portafilters. Consistent tamping and extraction: automatically adjusts the tamper height to accommodate different cup sizes, promoting uniform tamping and extraction. Key features and specifications Material: 304 stainless steel for durability and corrosion resistance Sizes: available in three sizes to match common portafilter diameters Compatibility: fits most standard portafilters Function: automatic height adjustment for consistent tamping and extraction across varying cup sizes Use scenarios Home barista setup: dial in a single shot or small batch of espresso with predictable depth and consistent tamping, improving repeatability over time. Small cafe or busy kitchen: maintain uniform shot quality across multiple cups and portafilter sizes without manual height tweaks. Barista training or demonstrations: teach proper extraction depth and tamping height, shortening learning curves for staff.