This CB antenna magnet mount kit features a 12-inch Rubber Duckie whip and a 17-foot RG58U coax cable with a PL-259 connector and is perfect for all 27 MHZ CB transceivers. It has frequency coverage of 26.965 to 27.405 MHZ. The heavy-duty 3-inch magnetic base has an attached 17-foot coaxial cable.