Spark Plug 12mm Universal Car Engine Gap Tool Sparkplug Caliper Gapper Gapping

Steps: 1. Simply screw your spark plug into the bottom of our gap tool. 2. Use your desired size feeler gauge for gap thickness. 3. Turn the knob with the feeler gauge in place till the side electrode compresses to the desired gap thickness. Specification: Condition: 100% Brand New Material: Aluminium Alloy Color: As Pictures Shown Purpose: Universal for all 12mm thread spark plugs Package List : 1 * Spark Plug Gap Tool