The R-3M Medium Duty SS Spring is made
from spring steel and are chrome plated. The upper and lower inserts are
made of chrome-plated machine brass and have standard 3/8"-24 threads to fit
all standard antennas, mounts and accessories. The medium duty model works
especially well with our 2ft "KW" & "FS" series antennas as well as the 3ft
"FL" or "RP" antennas. Physically, the spring is about 3.0" (76mm) tall with
a diameter of 0.800" (20mm).
These springs are also available with a stainless steel body.
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