Enhanced : consistent coffee dosage and minimize waste with our magnetic dosing ring. Perfect for professional baristas and coffee enthusiasts alike. Universal Compatibility: Designed to fit 51mm portafilters, this dosing ring is compatible with popular espresso machine like for , for E61, and for . Construction: Crafted from high-quality materials, our dosing ring withstands the rigors of daily use in a busy coffee shop or home kitchen. Easy to Use: The magnetic attachment allows for quick setup and removal, making it a hassle-free addition to your coffee preparation tools.