The KBR hub is designed for new construction or retrofitting for Emergency Vehicle Pre-emptive (EVP) detectors on mast arms, poles and other supporting members. The KBR Hub meets the requirements of the National Electrical Code (NEC) 370-17b for grounding requirements. The KBR Hub can be field located using the supplied removable template for the best-intended use before attaching to the supporting member. No welding, sand blasting, or painting of the supporting member is required from the installation of the KBR Hub. Since it is a standard female ¾” or 1” pipe thread, this hub can be used for several other applications, i.e. cameras, banners, signs etc.