1. [Easy to Operate]Just gently place on top of your bottomless portafilter, grind, dispense and tamp after the portafilter basket is filled with coffee powder, and quickly remove the funnel when you're done. which helps you make delicious and mellow coffee drinks. 2. [Suitable for 58 mm portafilters] The espresso dosing funnel is designed specifically for working with all 58mm espresso portafilters, including Rancilio, Gaggia bottomless portafilter. 3. [Keep Desktop ]By using this dosing funnel, all coffee powder can be dropped into the 58mm portafilter basket accurately, which prevents coffee powder from splashing and helps mash the powder, and improves dose weight and shot consistency. It will be a great helper for you to become a professional barista! 4. [Coffee Lovers Accessory]This funnel and puck screen will provide you with the accessory to complete your machine, giving you the dom to brew coffee how you like it.Whether you are an experienced barista, or you simply love your coffee at home,our dosing funnel and puck screen will be the ideal accessory to complete your set.