ZRDR CO2 Regulator High Pressure Replacement Gauge Part # ZRDR-CO2A-HIREG
 
Fits Regulator Models
R100X, R120X
High Pressure Gauge
See Diagram for Installation (Part A) 
 
Note - If you are in need of the Low Presure (Part B)  Order Part # ZRDR-CO2B-LOREG