Secure your connections with the TECHSPAN RDC09NA-GR Dome Connector. This grey connector is designed for reliable performance, featuring an integrated O-ring and locknut for a tight seal and secure mounting. It accommodates a diameter range of 0.20-0.39 inches and includes a .375 inch NPT fitting.The TECHSPAN RDC09NA-GR is a dome connector with a .375 inch NPT fitting. It is designed to accommodate a diameter range of 0.20 to 0.39 inches. The connector comes in grey and includes an O-ring and locknut for secure installation.