... bezel, chrome plated bezel, brass bezel, steelroll ring (or bayonet threaded ring), type: snap on, roll ringTUBE&SOCKET: steel ... BSPT dependent on model & size. Bottom, backleft & right side connectionAVAILABLE RANGES:30Hg "- 0-15-15000PSIWINDOWS:Acrylic, glass & polycarbonate ... bezel, chrome plated bezel, brass bezel, steelroll ring (or bayonet threaded ring), type: snap on, roll ringTUBE&SOCKET: steel ...