MAGNETIC DESIGN -- The Espresso dosage funnel is magnetically designed, which can effectively improve the stability and effectively prevent the powder from spreading, and what's more amazing is that it can save you about 8% coffee powder! Compatible -- The adding funnel is suitable for most coffee machine handles or 51mm coffee handles, suitable for use at home or office, or as a nice gift for coffee lovers. Easy to operate -- you simply place the portafilter addition funnel on top of the portafilter while grinding, dispensing and tamping, and quickly remove the funnel when you're done. High-quality material--The coffee quantitative loop replacement part is made of high-quality food-grade aluminum, durable and practical, no rust, no corrosion. Avoid Mess and Waste--Coffee Dosing Ring Stop wasting coffee and messing up your countertops, with the coffee dosing funnel, all coffee goes into the filter basket, greatly reducing mess and tampering difficulties.