Features: The magnetic coffee dosing rings securely attaches to 51mm/58mm portafilters, preventing coffee grounds spillage while enabling dosing for consistent espresso extraction. Featuring a clear PC construction and optimized funnel shape, this accessory ensures precise coffee distribution and 90% reduced powder dispersion during espresso preparation. Ideal for coffee enthusiasts seeking professional espresso tools, its Italian inspired design bridges specialty cafés standards with everyday kitchen convenience. Perfectly suited for bustling home kitchens, specialty coffee shops, or office espresso stations, it streamlines workflow during morning rushes while maintaining elegance for entertaining occasions. The PC materials withstands daily use without compromising coffee purity, while its silicone enhanced edges protect portafilter surfaces from scratches during frequent attachment. Specifications: Component: PC Color: Clear Dimensions: as shown in the figure Package Includes: 1x Coffee Dosing Rings note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.