Check the listing for details. Firestik II FS4B 4 Ft 900 Watt Tunable Tip CB Antenna - FS Series - Black. Color: Black, Condition: New. Listed at 39.99 USD. Firestik FS4B - 4 Foot Tuneable Tipped Black CB Radio AntennaAll "FS" series antennas are factory bench tested for resonant frequency and overall quality. They are available in four (4) standard colors .. Black or White with a red tip, or Red or Blue with a white tip.Description: The "FS" antennas are 100% American made with 100% American materials. To maintain a balance between flexibility and ruggedness, we use a custom blended, glass fiber reinforced shaft. Each is wound with heavy insulated copper wire to prevent the oxidation and shorted windings often found on non-Firestik antennas. The tunable tip mechanism is made from rust-proof brass and has a rubber o-ring to hold the adjuster in place after tuning. Our 3/8"-24 threaded base has a tapered contact point that works especially well with Firestik mounts and accessories. The tapered "lug-nut" effect transfers stress away from the threads and reduces the possibility of vibration induced loosening of the antenna in its mount. Each antenna is covered with a static reducing, water-tight sleeve containing UV and pigment stabilizers. For peek performance we recommend that you use one of our 18-foot Fire-Flex coaxial cables with these antennas. All "FS" series antennas are factory bench tested for resonant frequency and overall quality. They are available in four (4) standard colors .. Black or White with a red tip, or Red or Blue with a white tip. Easy-tune 'bare-hands tunable tip', High-performance coil design, Rugged solid-fiberglass core, High power handling Firestik II FS4B Features:5/8 Wave Length Design Rated @ 900 WattsCan be Used in Single or Dual ConfigurationsRequires Fine Tuning (SWR)Easy-Tune Bare-Hands Tunable TipHi-Performance Loading Coil40 Channel +Color: Black