Maxmoral 3-Pack PL-259 UHF Female to UHF Female Coax Cable Adapter RF UHF-KK S0-239 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 : 3.5x1.4cm/ 1.4" x 0.55"(D*L);Material : Metal Commercial Grade UHF Series Adapters Nickel-Plated Machined Brass Construction Package Content: 3 x UHF SO239 Female to Female Connector