Feature 1Universal Fitment: This spark plug gap tool is universal for 10mm 12mm 14mm 16mm spark plugs. Use your desired size feeler gauge for gap thickness. 2Good Compatibility: Spark plug gap tool is compatible for NGK 6061, for NGK 5671A, for NGK BKR9EIX and similar spark plugs. 3Professional: The spark plug gap tool will give you the perfect gap every time, just place the spark plug on the gap tool. 4Maintenance: If the spark plug gap tool gets wet, dry it with compressed air and apply lubricant to prolong its life. 5Bounced: If your clearance target is 0.44mm, we recommend 0.42mm, so you'll get 0.44mm when it bounces back.Item Type: Spark Plug Gap ToolMaterial: MetalFitment:Universal for 10mm/0.39in, 12mm/0.47in, 14mm/0.55in, 16mm/0.63in Spark Plugs.Compatible forNGK 6061, forNGK 5671A, forNGK BKR9EIX and similar spark plugs.Not compatible with 18mm thread and longer style spark plugs. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x SparkPlugGapTool