All PCs included. Ground alligator clip included but not shown. The Snap-On EECT900 Multi-Probe Ultra Circuit Tester is a high-quality diagnostic tool designed for automotive use. With its ability to test AC/DC voltage, current, and resistance, this circuit tester provides accurate and reliable results. The included probes make it easy to test various circuits within a vehicle, ensuring efficient and precise troubleshooting. The trusted Snap-On brand ensures durability and quality for professional mechanics and car enthusiasts.