| 
                Also 
                available in 
                Heavy Duty model | 
  
    | The SS-3M Medium Duty SS Springs 
    are made from long lasting, top grade electro-polished stainless steel. The 
    upper and lower inserts are made of chrome-plated machine brass and have 
    standard 3/8"-24 threads to fit all Firestik 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. The heavy 
    duty model may be used with antennas up to 60". Physically, each spring is 
    about 3.0" (76mm) tall with a diameter of 0.800" (20mm). |  
   
 
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