This high-quality 45x12 mm spring is designed for use in commercial espresso machines and grinders, compatible with brands like Eureka and Nuova Simonelli models (MDL, MDLCA, MDLCA/C, MDX, LUSSO). Engineered to provide reliable tension and durability, this replacement spring ensures smooth operation of dosing mechanisms and other espresso machine components. Made to precise specifications, it helps maintain optimal performance and prolong equipment lifespan in busy café environments. An essential spare part for baristas and machine technicians seeking dependable maintenance solutions.