Note that the pin configuration differs from other versions going clockwise "+" "-" "0". O-ring not included. Found on the La Marzocco "Piero" group assemblies.
Attention CA Residents: Prop 65 Warning
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.