Bacharach 2002-0410 MSG410 Refrigerant Gauge, Blue Recovers ALL commonly used refrigerants, including R-410A (Peron) Replacement part for FM3600 and FM3700 Comes with: 2-1/2" dial size, 1/8" NPT connection, degree F/degree C/PSI/kg/cm2 scale, Gauge pressure: 500 PSI Image shown may NOT be accurate - Some show devices instead of parts; This is a PART, not the whole device