Features: Made of premium 304 stainless steel, non-rust nor corrosive, food grade material, safe to your familys health. Suitable for 51mm, 53mm, 58mm coffee machines. Coffee Dosing Ring stop wasting coffee and messing up your work top. With a coffee dosing funnel all the coffee goes into the portafilter basket, severely reduces the mess and difficulty in loading and tamping. The funnel is dishwasher safe, you just rinse it with water and clean it with brush or sponge; As for use, you simply place the funnel atop of your portafilter while grinding, distributing and tamping, and removed funnel quickly when finished. Package Includes: 1x Coffee Dosing Funnel Specifications: Material: Stainless Steel Color: Black/Silver Size Chart: 51 Diameter: Approx. 2.00inch(51mm) 53 Diameter: Approx. 2.08inch(53mm) 58 Diameter: Approx. 2.28inch(58mm) note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.