High quality. The Sirius Satellite radio antenna adapter is made of RG174 pure copper cable, good conductivity. Wire length 4FT, Impedance: 50ohms. Easy installation. Anina universal Fakra coaxial cable can be directly plug and play, without any modification or splicing. Fit to most Car Truck Vehicles SUV like GM Ford Jeep Toyota Kia or other vehicles that with OEM Fakra Z male plug Sirius XM radio stereo head unit. XM Radio Fakra to SMB Tuner retention cable include Fakra Z female and male SMB male end. This Fakra-to-SMB antenna adapter converter cable allows to convert OEM factory-installed XM or Sirius tuner to an SMB antenna jack. That is means allow you to connect any of the aftermarket Sirius XM Radio antennas (including truck antennas) to your factory installed XM Sirius satellite stereo receiver tuner.