Fangrui Product Details 54mm Dosing Funnel - Excellent Espresso Dispensing Tool Designed For 54mm Diameter Portafilters,compatible For Express, For Touch, For Pro, For Infuser, For Pro, For Bambino, For Duo-temp Pro. Professional And Simple - Simply Twists To Lock Onto Your 54mm Portafilter And Sits Securely On The Portafilter Under The Built-in Grinder For A Hands-free Grinding Session.the Espresso Accessories To Help You Make Delicious Espresso Like A . Keep Desktop Neat - With This Coffee Funnel, The Coffee Powder Falls Precisely Into The Portafilter Basket, Avoiding Spills And Waste, And Keeping Your Table Clean And Tidy. Compacted Abrasive - Helps Collect And Tamp All Of Your Coffee Grounds 54mm Portafilter With Ease, The Grounds Can Be Tamped Without Removing The Dosing Funnel. A Worthwhile Investment- This 54mm Dosing Funnel Is Made Of High Quality Aluminum Alloy, Non-rusting And Non-, Food Grade Material, Safe S Health. It Not Bend Or Deform With Daily Use. It Not Cause Wear And Tear On The Portafilter.