(BUT NOT compatible with 18mm thread and longer style spark plugs.). Use your desired size feeler gauge for gap thickness. Turn the knob with the feeler gauge in place till the side electrode compresses to the desired gap thickness.

Brand: Unbranded
Non-Domestic Product: No
Type: Spark Plug Gap Tool
Warranty: 90 Day
Number of Pieces: 2
Custom Bundle: No
Manufacturer Part Number: VEHICLE-258
Set or Single Item: Single Item
Country/Region of Manufacture: China
Modified Item: No