Featured Gauge Equipped Brass Products Item Model No. Inlet Outlet Specification Gauge Adaptor GC GA1 212 Gauge Adaptor GC GA1E 212E Gauge Adaptor GC Ga2 204 Gauge Adaptor GC GA2E 212D Gauge Adaptor GC GA 3 212M GC GA 3E 212ME Gauge Adaptor GC Ga4 204M