1. It can save about 8% of coffee powder. This dosing funnel prevents coffee grounds from spilling out of the tower. Every time you fill up, the excess coffee powder can be scraped into the grinding chamber, ensuring the same amount, and even more surprising is that it can about 8% of the coffee powder! 2. High-quality aluminum alloy material, more selective. more popular with customers. This coffee dosing ring is made of high-quality aluminum, which is durable, rust-free and corrosion-resistant, making your coffee making process healthier and . 3. Fits the style: This espresso dosing funnel is designed for 54mm filter baskets, compatible with 878 (870), 875, 840, 810, 8 series other models, suitable for Barista , Barista Pro, Barista Touch , Bambino Plus and Duo-Temp Pro 54mm filter baskets. 4. Easy to clean. Can be cleaned quickly with a brush, sponge, dishwasher, etc. Product Name:Aluminum Coffee Powder Dosing Ring Type: Coffee Dosing Ring Size: inner diameter 54mm Applications: Coffee Tamper Accessories Colour:silver Material:aluminum alloy Package Contents: 1 x Coffee Dosing 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.