Made from long lasting, top grade brass and each spring is about 3" in length
Works especially well with 2ft "KW" & "FS" series antennas as well as the 3ft "FL" or "RP" (lighter weight) antennas. Not advised for use on large antennas over 3'
Standard 3/8"-24 thread that matches most CB radio setups
Upper and lower inserts are made of chrome-plated machine brass