Universal Fitment- Design for easy use and proper fit, this spark plug gap tool is compatible with almost all 10mm 12mm 14mm 16mm spark plugs. NOT for 18mm thread and short reach spark plugs, please check the size of your spark plugs before purchase
Effort Saving- Spark plug gapping tool allows you to adjust the gap with less time and effort. Simply place the spark plug onto the tool and select your desired size feeler gauge, then screw the knob slowly till the side electrode compresses to the desired gap thickness (Not including feeler gauge)
Adjustment Tips- For normal physical phenomena, some spark plugs electrode will spring back when adjust the gap. You are suggested to use 0.028in feeler gauge size if your desired gap is 0.003in, smaller scale than the target gap is recommended when using this gap spark plug tool
High Quality- Built for durable long term use, coated with anodized aluminum smooth surface, this saprk plug gap measuring tool is anti-corossion and anti-scratch. With its sturdy inner size, the tool for spark plug can greatly pevent spark plug wire marks or or nicks for optimal spark plug and engine performance