The 4-foot Superflex 1500-watt fiberglass antenna whip has 180-degree whip action capability and a Superflex quarter-inch fiberglass rod. The whip is tunable with a top loaded coil 1/4 inch wavelength design and Mil-Spec polyolefin sheath. It can be used as a single or co-phased antenna. Designed for CB and 10-meter radios. With a frequency range spanning 26-30MHz you're always tuned in to the chatter. Its wave length design ensures maximum signal strength for clear communication while the chrome-plated whip adaptor adds a touch of rugged style to your rig. Designed to fit all 3/8-inch x 24 threaded mounts installation is a breeze. And with its low-profile design you'll be cutting through the air with minimal drag - because every second counts on the highway.