Product This probe pen is ideal for checking circuits, fuses, switches and wiring on automobiles, trailers, boats, motorcycles and other low voltage systems. Connect the alligator clamp to the ground, then take the probe to test circuit. If the indicator light is on, there is electricity. Features: Handle is made of plastic and the hardened & tempered carbon steel probe is chrome plated. The sharp steel probe easily pierces wire insulation to check circuitry. Light in handle glows when circuit connection is complete. Test a range of circuits ranging from 6V to 24V. Light weight design and super convenient to bring with. Specifications: Material: Plastic, Carbon steel Color: As the picture show Clamp Capacity: 20A Voltage Range: 6V-24V Pen Length: 17.3cm / 6.8inch Probe Length: 8.3cm / 3.3inch Line Length: 96cm / 37.8inch Quantity: 1pc >The package: 1*Circuit Tester Note: 1.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you