1/4" M x 130 mm Auto-fill Probe /2-group-espresso-machines Fits: Rancilio MD-40 and Rocky

Fits: Rancilio MD-40 and Rocky grinders (110V)

since it's functionally identical and better supported going forward

since the spout sits too high and wide for that

Note: A larger heat exchanger is used on newer Astoria Calypso

GS3 (brew and steam boilers)

1/4" M x 130 mm Auto-fill Probe /2-group-espresso-machines Fits: Rancilio MD-40 and Rocky1 4" M x 130 mm Auto Fill Probe This auto fill probe monitors reservoir water level on a range of Nuova Simonelli and Victoria Arduino machines. It ships without the recommended sealing gasket, so plan to order one alongside it. SPECIFICATIONS Thread: 1 4" Male Length: 130 mm COMPATIBILITY Fits: Nuova Simonelli Appia, Aurelia, Jazz, Master, Microbar and Premier Maxi; Victoria Arduino Adonis, Athena S, Athena Leva, Venus Bar and Venus Century