Ceyear AV31128 DC to 67GHz 1.85 mm Calibration Kit Same as Agilent Keysight 85058e. Wide Frequency Range: Supports DC to 67GHz frequency range for high-performance testing. High Precision SWR: Load SWR is less than 1.15, ensuring accurate calibration results. Full Two-Port Calibration: Includes precision standards to perform full two-port calibration. Complete Accessory Kit: Comes with torque wrench, adapters, and open/short/load standards. Agilent Equivalent: Same as Agilent Keysight 85058E, compatible with major VNAs. Flexible Customization: Offers full, minor, and flexible customization from samples or designs.