This flexible extension line uses thin but low loss coax to reduce the stress put on your SMA radio connector. The more conventional SO-239 style increases your antenna choices. Ideal for permanent antenna installations. Fits models KG-UV6X, KG-UV3X and DB-16X. Similar to: Comet HS-05 Additional Model #'s 215-CXA-ST 215-CXAST CXA-ST CXAST upc: 840128901564