Features 1.30MHz-3GHz Frequency Response: The frequency response of the probe is relatively flat in the range of 30MHz to 3GHz and is used to measure the magnetic field in the development phase 2.Comprehensive Function: Large diameter probes have high sensitivity but low directional resolution, while corresponding small diameter probes have low sensitivity but high directional resolution 3.Without Burrs: Near field probe is one piece molding without burrs, possess smooth surface and fluent installation 4.Impact Resistance: Good quality ABS material, possess impact resistance, scratch resistance, environmentally friendly 5.4Pcs in Total: The package contain a total of 4pcs of probes, which can fully meet your using needs Specification Item Type: Near Field Probe Material: ABS Operating Frequency: 30MHz to 3GHz Package List 4 x Near Field Probe