Features & Benefits
- Use to set and measure spark plug gaps plus other ignition clearances from .010" to .045" and .254mm to 1.143mm
- Blades have both SAE and metric measurements
- 6 wire gauges check spark plug gaps and 12 straight blades check other clearances
- Includes a double-ended electrode tool for easy adjustments
- Blade length: 3-5/16 in
- Each blade has sizes marked for easy identification