Maxmoral 5-Pack PL-259 UHF Female to UHF Female Coax Cable Adapter S0-239 UHF Double Female Connector Plug S0-239 UHF female connector.Used for connecting two PL-259 connectors together. Nickel plated and designed to offer the lowest VSWR rating of the two series Size : 27 x 15mm/1.1" x 0.6" (L*D) Commercial Grade UHF Series Adapters Nickel-Plated Machined Brass Construction Package Content: 5 x UHF SO239 Female to Female Connector