Note:The higher in frequency and the longer of the length, then the greater of the attenuation. Please pick the length according to your usage.Description RG58 Type RP-SMA Male to RP-SMA Female Antenna Cable with Pure Copper Low Loss, extends your wireless antenna up to 3.3 feet to provide optimal placement for your antenna. It can be used with wireless routers, access points and adapters that feature a removable RP-SMA antenna. Specification Type: RG58 RP-SMA Male to RP-SMA FemaleImpedance: 50 ohmCable length: 3.3 feetCable diameter: 0.2 inch Package Include 2 x RG58 RP-SMA Male to RP-SMA Antenna Cable