Eureka Zenith Short Profile Hopper - Complete Complete short-profile bean hopper with a 53mm throat, built for Eureka's Zenith grinder line but equally at home on the Nuova Simonelli MDX, since Eureka manufactures the MDX for Simonelli under license. SPECIFICATIONS 53mm throat diameter COMPATIBILITY Fits: Eureka Zenith and Nuova Simonelli MDX grinders Replaces: Nuova Simonelli #52150000 / Eureka #J5215.0000 INSTALLATION Twists on and off the grinder throat, no tools required for a straightforward hopper swap. PRO TIPS Because Eureka builds the MDX for Simonelli, the two part numbers above are literally the same physical hopper, order whichever is in stock without worrying about a mismatch.