Jastind professional heavy duty 6-24V DC Voltage Tester designed for car electrical circuits, automotive battery, battery charging systems, ignition systems, which is a must have probe test tool for any automotive engineer, electronic engineer or circuits DIY.<br> * Large size tester body made with high quality ABS, heavy duty, shatter-proof, durable than normal test light..<br> * 6-24v Widely Use Circuit Tester,designed to check vehicles electrical circuits, automotive battery, circuit continuity and other 6-24 volt wiring and circuits.<br> *.Made with sharp super hard steel probe for piercing wires, also for hard to reach areas.<br> *. Portable 135 inch long enough PU spring wire cord and large size alligator clip for easy and one hand operation.<br> *.Strictly tested long service life test light bulb, including 1 pcs replacement conductive spring& bulb set to make it serve you faithfully for years.<br><br> <b>Please Note</b><br> As a quality test light, the alligator clip with it is more heavy duty than normal small clip, for easy connecting to the ground, first please push the wire a little to let the head of clip core out of the clip black rubber body, then press the clip to connect. Please refer to the user manual in the package.