Features:1. The secondary ignition probe allows the oscilloscope function to measure the kilovolts value of ignition systems with Distributorless system (DIS) or conventional ones.2. This is a capacitive pickup that simply connects around the insulation of an ignition circuit component such as a plug wire.3. The Secondary ignition probe obtains the signal using a capacitive clip and a conditioning circuit in order to deliver a readable waveform to the oscilloscope.4. It comes with a shielded 2.5m lead. 5. Suitable for use with conventional ignition systems and most HEI and DIS systems.Specification:Condition: 100% Brand NewModel: X10000Weight: Approx. 166g / 5.9ozLength: Approx. 256cm / 100.8inPackage List:1 * Secondary Ignition Pickup Probe Note:1. The test-clip should be connected to the isolative wire of ignition plug instead of ignition plug itself to prevent the fire of electrical shock.2. At least 2inchs away from other high-voltage wires to avoid the interference..