Item Name: Circuit Test Pen Car Test Long Probe Pen Electric Test Tool Voltage Test Pen. Size: Shown as PictureCable Length: Max.2.4mDisplay: Digital LCD ScreenMaterial: Plastic + Metal100% brand new and high qualityVoltage test range: 2.5-32VPackage Included: 1 x Car Electrical Circuit Test Pen Product Feature:1. It can effectively help you complete the detection of car ignition coils and effectively prevent potential safety hazards.2. It is made of durable, efficient and practical materials and can serve you for a long time.3. The engine speeds adjustment button can provide you with a simpler and easier detection method.4. The design of the product is reasonable, with non-slip design, can better serve you.5. This is a very practical ignition coil tester, which can bring you more convenience. Note:1.Please allow 1-2cm error due to manual measurement.