Alligator clip securely fastens to ground, providing a solid grounding point for ignition coil work. Helps prevent ignition coil burnout by maintaining stable grounding during testing and operation. Screw assembly adjusts quickly and easily, enabling fast setup and reliable connection. Provides intuitive understanding of the ignition coil, aiding correct usage and diagnosis. Compatibility: designed for common ignition coil systems and standard ground points. Performance: delivers a secure ground, simple adjustment, and straightforward operation. Use scenarios: Automotive diagnostics and : attach to a ground point to safely test ignition coil performance and sparking behavior. Educational demonstrations: use in classroom or workshop to illustrate grounding and ignition coil operation. DIY projects: quickly adapt to different coil configurations with the adjustable screw for stable grounding.