... 1/4" 1/2" 3)CE Certificate General Gauge 5J2 are high quality dry gauges design to ... bezel, chrome plated bezel, brass bezel, steelroll ring (or bayonet threaded ring), type: snap on, roll ringTUBE&SOCKET: ... bezel, chrome plated bezel, brass bezel, steelroll ring (or bayonet threaded ring), type: snap on, roll ringTUBE&SOCKET: ... ,restrictors, special connections and more. Steel Ring General Gauge 5J2