General description The 58 stainless steel water cup powder ring is a portable coffee machine accessory designed for 51/54/58mm portable filters compatible with Barista Express, Pro, Touch, Bambino Plus, Infuser, and Duo-Temp Pro. This coffee dosing ring helps prevent mess and waste by ensuring that all coffee grounds are directed into the movable filter basket, significantly reducing cleanup time during loading and tamping. Technical specifications Material: 304 stainless steel Packing method: Paper box pack Packing size: 9 x 9 x 3 cm Weight: 120g (51mm), 155g (54mm), 195g (58mm) Usage To use the funnel, simply place it on top of the hand filter while grinding, distributing, and tamping your coffee. Once you are finished, quickly remove the funnel for easy cleanup. Other information Easy to clean: Dishwasher safe; can be rinsed with water and cleaned with a brush or sponge. Tight fit: The funnel fits snugly on the outer edge of the filter, allowing for effective tamping. Inner