These antennas are often used by the commercial radio services as an off-the-shelf antenna which can be custom-tuned for a desired operating frequency. The whip length is 49" from tip to base set screw. For Amateur Radio applications, it can be trimmed down for either 6-meter or 2-meter use depending on loading coil and/or mounting configuration.
With no ground or counterpoise during measurement, the actual whip above presents a 1.3:1 SWR at 44 Mhz.
Whip is brand new, never used. Black with PL-259 connector.