Replacement air pressure gauge. This gauge is an OEM replacement for Rolair air compressors, part number GA0250200GC. This gauge has a 2" diameter face and 1/4" male NPT threads. This is a side/bottom mount gauge. This is a quality replacement gauge that measures up to 200 PSI. This gauge fits a variety of Rolair compressors as well as other brands! Specifications: OEM Replacement designed to fit Rolair Air Compressors 2" Diameter Face 1/4" Male NPT Threads Side or Bottom Mount 0-200 PSI Gauge