Universal Spark Plug Gap Tool with 32 Blade Steel Feeler Gauge, Spark Plug Gapper Compatible with Most 10mm 12mm 14mm 16mm Spark Plugs. Note: But not suitable for 18mm thread and long or short reach spark plugs. Use the required size of feeler gauge to put between the gaps. Universal Spark Plug Gap ToolThe spark plug gapper is universal and fits most 10mm 12mm 14mm 16mm Spark Plugs. NOT for 18mm thread and longreach spark plugs, double check the size of your spark plugs is recommended. HighQuality MaterialOur spark plug gapping tool is made from durable and premium materials, ensuring longlasting performance and reliability. Timesaving EfficiencyWith its efficient design and accurate measurements, this spark plug gap tool helps save valuable time during vehicle maintenance, ensuring hasslefree installations and peak engine performance. Tip for Adjusting GapFor normal physical phenomena, some spark plugs electrode will spring back when adjust the gap, smaller scale than the target gap is recommended. EasytoUseDesigned with simplicity in mind, this tool features a userfriendly interface, allowing anyone to effortlessly adjust and measure spark plug gaps. Our spark plug gapping tool is backed by our reputation for excellence and reliability.