In-Line Spark Plug Tester. Connect one end to coil, other end to spark plug. Window allows you to see the amount of spark. Premium quality for longer life. Meets or exceeds manufacturer specs
Product Features:- Connect one end to coil, other end to spark plug
- Window allows you to see the amount of spark
- Premium quality for longer life
- Meets or exceeds manufacturer specs
- Backed by a Limited Lifetime Warranty