Firestik SS-3H Stainless Steel Heavy Duty CB Radio Antenna Mount Spring (BULK) Made from long lasting, top grade electro-polished stainless steel 3/8" x 24 threads fit all Firestik antennas, mounts and accessories Works with all Firestik antennas up to 60" long Each spring is about 3.0" BULK ITEM, NO RETAIL PACKAGING