Driver Extreme Heavy Duty Antenna SpringThis stiff spring holds a 4' antenna more vertically Stainless steel and heavyduty Holds the antenna tight with little sway at high speeds Description This Driver Extreme heavy duty antenna spring is crafted from stainless steel and braided copper wire for superior strength and corrosion resistance. Its 3" by 1" dimensions can handle heavy antennas, providing greater stability at highway speeds than other antenna springs, including Firestik's HD

Fits the Uniden Pro 510 and 520 CB radios

3/16" NMO Mount for 3/4 or 3/8" Hole

Each is wound with double insulated copper wire to prevent the oxidation and shorted windings often found on non-Firestik antennas

mollis leo

this mount will not fit 2004 and newer vehicles

This is ideal for heavy duty equipment as you don't have to add a power converter

100% Aluminum foil tape

motorhomes and other vehicles that don't have a metallic chassis

Impedance: 200 ohms

Product Details: Increase microphone length by 8'

this is the part for you

such as Chevy or Ford trucks