This crimp-on connector is for a RG-59 cable and has a male PL-259 end. Compress the connector onto your coax cable to create a tight and secure connection. Using a PL-259 connector for your CB coaxial cable helps maintain signal integrity and minimizes signal loss between the CB radio and the antenna. This is a standard and reliable choice for CB radio installations in semi-trucks and other vehicles. This crimp connector can be used for a variety of applications including low-loss RF coax applications and CB antenna cables as well as ham radio applications.