Cobra HA-BNC UHF-BNC PL259 CB Adapter Allows you to connect a hand-held Cb to a standard Roof mount antenna Fits all handheld Cb Radios Great for radio Scanners, handheld cb's & amateur equipment Type : RF( radio frequency );total size : 1.6 x 3.2cm/ 0.63" x 1.26"(Dl) Package content : 1 x BNC Male to UHF so239 Female connector