Features These are BNC female to SMA female adapters used for antenna connection. Made of copper material, these connectors has long service life. They have wide frequency bandwidth, perfect performance, high reliability. Gold-plated copper core, durable construction for long-lasting performance. 100% brand new product, all refund if unsatisfied If you have any questions, please contact our professional customer service team. Features: -These are BNC female to SMA female adapters used for antenna connection. -Made of copper material, these connectors has long service life.  -They have wide frequency bandwidth, perfect performance, high reliability. -Gold-plated copper core, durable construction for long-lasting performance. -100% brand new product, all refund if unsatisfied If you have any questions, please contact our professional customer service team. Specification: Type: BNC female to SAM female, BNC-K/SMA-K Material: Copper, gold-plated copper core White Isolation: PTFE (high temperature resistance) Impedance: 50Ω Frequency: 0--6Ghz Size(L*W): 26*11mm/1*0.4in Weight: Approx.13g/0.5oz Package list: 2 * BNC Female to SMA Female Connectors Package List