Description: 【Wide adaptability】: Universal Spark Plug Gapping Tool is suitable for 10mm, 12mm, 14mm, 16mm standard threaded spark plug, meeting the needs of various models. Not suitable for 18mm threaded and long distance spark plug 【Aluminum alloy material】: Universal Spark Plug Gapping Adjustment Tool is made of aluminum alloy, with a stable structure, suitable for long term use, ensuring stable performance 【Easy using design】: Just put the spark plug on the tool, select the thickness of the feeler gauge and tighten the knob, simple and convenient 【Usage suggestions】: It is recommended to use a scale smaller than the required gapping to prevent bounced back and ensure accurate adjustment 【Multi scenario application】: Spark Plug Gapping Adjustment Tool is suitable for various scenarios such as car repair and maintenance. It is an ideal tool for spark plug adjustment and improves work efficiency Specification: Material: Aluminum Alloy Size Chart: 12.2cmx3.2cmx2.6cm/4.80x1.26x1.02inch Package Includes:1 Universal Spark Plug Gapping Tool, 1 feeler gauge set Note: Please allow slightly errors due to manual measurement and different monitors.