Features: 1. Application: The TP-300-A Probe Kit includes the most popular probes and components that are required to service majority of current GM vehicles globally. 2. "Test, Don't Guess": Great for checking terminal tension. The J-35616 Terminal Probes are the tools of choice for wiring and electronic component diagnosis. 3. Benefits: Includes sturdy plastic box. Well engineered to support proper diagnosis and will not damage terminals or harnesses. 4. Replace OE: A less expensive option to the complete J-35616-F kit. EL-35616-300-A. .