Government testing proves K40 has more gain on every channel 

In recent testing by the U.S. Dept. of Commerce, the K40 Trucker Antenna outperformed the Wilson 2000 in gain, VSWR and bandwidth on all 40 channels. Testing was performed by the National Institute of Standards and Technology- the same agency whose U.S. Atomic Clock is the world standard for all computer clocks and the Global Positioning System. 
K40 TRUCKER-Center Load CB antenna

Features include:
7000 Watts AM power handling capability (ICAS).
Frequency range 26-30 MHz.
1.6 MHz bandwidth.
1/4 wave length design.
Tunable design.
Designed for CB and 10 meter radios.
Special design for weather band reception.
Can be used as a single antenna or co-phased for dual antennas.
10? shaft length with 3/8? x 24 threads.
Solid 8 gauge 100% silver plated wire for maximum efficiency.
49? stainless 17-7 ph tapered whip.
Radiused 180? tip for maximum range and clarity.
Chrome plated whip adapter.
Ultrasonically sealed housing eliminates corrosion caused by water.
Exclusive computer aided MetlPlas process molds metal and thermoplastic into a single part for maximum reliability.
Full 5-Year Warranty Against Defects

Available in white with silver logo.