Features DURABLE COPPER These connectors are made of copper material for long life and corrosion resistance. N Female to SMA Female: These are N Female to SMA Female Adapter for RF Connections of Coaxial Cable. Excellent material: the RF adapter is made of copper and electric gold-plated material. The white insulation part is made of high temperature resistant PTFE. RELIABLE PERFORMANCE: The RF adapter has broadband, perfect performance and high reliability, so you can use it without hesitation. TECHNICAL PARAMETERS The impedance of the N female to SMA female adapter is 50 ohms, the frequency is between 0 and 6 GHz. Specification: Item Type:N Female to SMA Female Adapter Material: copper, electroplated. White insulation: PTFE (high temperature resistance). Impedance: 50 ohms. Frequency: 0-6G Hz Package list: 2 x N Female to SMA Female Adapter Package List 2 x N Female to SMA Female Adapter