... /8" 1/4" 1/2" 3)CE Certificate U Clamp Pressure Gauge are high quality dry gauges design to provide reliableservice ... plated bezel, brass bezel, steelroll ring (or bayonet threaded ring), type: snap on, roll ringTUBE&SOCKET: steel with nickel plated, phosphor ... plated bezel, brass bezel, steelroll ring (or bayonet threaded ring), type: snap on, roll ringTUBE&SOCKET: steel with nickel plated, phosphor ...