Precision Fit for Models: Specifically designed for 54mm portafilters including the Express (BES870XL), Pro (BES878BSS), and Touch (BES880BSS). Ensures a snug fit to prevent coffee spills and wastage during grinding. Enhanced Brewing Experience: Ideal for coffee aficionados, this dosing funnel allows for a precise 21- shot. It facilitates a clean, spill-free environment while ensuring every of coffee contributes to a robust brew. Effortless Operation: Simply attach the funnel to your espresso machine's portafilter and position it under the grinder. This hands-free approach guarantees that all coffee grounds land in the basket, enhancing consistency and taste. Construction: Crafted from high-quality ABS material, this coffee dosing ring is built to last. It resists bending and wear, maintaining its form to provide a reliable brewing accessory for your daily coffee routine. Color:Grey Transparent Material:PC Package Contents: 1 * Coffee Powder Ring 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.