The USED Mac Tools 6/12/24V Two-Color LED Circuit Tester ET112X is a reliable and high-quality tool designed for testing electrical circuits. With a 12-volt capability, this circuit tester by Mac Tools ensures accurate and efficient troubleshooting of electrical systems. The two-color LED feature provides clear indication of the circuit's status, making it a valuable tool for professionals and hobbyists alike. *clamps are rusty*