Product Specifications Material: Copper, Carbon Steel; Pen length: 10 cm/4 inches; Probe length: 1.3 cm/0.5 inches; Cord length: 62.5 cm /24.5 inches; Package weight: 40g; Quantity: 1 PC; Bulb: 3 watt bulb (replaceable); voltage range: 6V-12V Easy to Carry The circuit tester and the car fuse tester are very lightweight, and its lightweight design can provide you with super convenience, so you can take it with you. High Quality The handle of the test lamp is made of high-quality copper, and the quenched and tempered carbon steel probe is chrome-plated. The sharp steel probe can easily pierce the wire insulation to check the circuit, which is convenient to use. Test flashing lightAfter the circuit connection is completed, the light on the handle will light up to detect the fault in the low-voltage circuit of the traffic or transportation machinery. The cable length of the car test light is 62.5 cm, which is very suitable for your car. Widely usedThis professional automotive heavy-duty circuit test pen is designed to test 6-12v DC voltage, quickly check the car headlights, taillights, turn signal light circuits, wrong sockets, connections, fuses, broken wires, etc.