Features: 1. This espresso dosing funnel is designed for 54 mm portafilter baskets, compatible for 878 (870), 875, 840, 810, 8 series other models, fit for the Barista Express, Barista Pro, Barista Touch, Bambino Plus, and Duo-Temp Pro etc 54mm portafilter baskets 2. This coffee dosing ring is made of high-quality aluminum, which possesses sturdy and durable performance, non-rust, and anti-corrosion, making your coffee-making process healthier and . 3. This dosing funnel can prevent coffee powder from overflowing from the tower. Every time you overfill, the excess coffee powder can be scraped into the grinding chamber to the same dosage, Even more surprising is that it can about 8% of coffee powder 4. Can be cleaned quickly with brushes, sponges, dishwashers, etc Specifications: size: 9 x 9 x 4 cm Material: Aluminium colour: black Package Contents: 1 x Coffee catcher 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.