Standard N male connectors for use with LMR-600 Coax cable. They are used for a wide variety of connections to terminate coax at a N Female jack. These are the most common connector for ISM antennas sold. The body plating is Silver, the center pin is Gold and the dielectric is Teflon. Center pin attachment is crimp type, though we recommend the pin to be soldered, and outer ring is crimp. Piston crimp tool with .610 die required for connector.