Pressure Gauge,Freon Pressure Gauge,pressusre meter 1.Case material: steel or chrome plated 2.Connection: 1/2, 1/4 , 3/8 Pressure Gauge,tire pressure gauge,pressusre meter,gauge,Freon Pressure GaugeKey Specifications/Special Features:Case material: steel or chrome plated Bourdon tube: copper alloy/SS304 Connection material: brass/stainless steel Movement: brass/SS304 Element: brass/stainless ...