Check the listing for details. Single Outer Spark Plug Thread Repair Tools M12 Inner Thread M14 Tap Universal. Condition: New. Listed at 19.38 USD. PRODUCT INFORMATION:Type: Thread Repair KitThread Format: MetricMaterial: High Speed SteelTap Type: Bottoming TapDrive Shaft: 5/16" Square DriveFlute: StraightMaterial: Stainless SteelColor: Silver Tone, Gold ToneTotal Length: 8.9cm / 3.50"Tap Thread Width: 11mm / 0.43"Tap Thread Diameter: 14mm / 0.55"Tap Pitch: 1.25Tap Thread Length: 2.5cm / 0.98"Screw Thread Pitch: 1.25Screw Thread Outer Diameter: M14Screw Thread Length: 17mm / 0.67"Inner Thread Inserts: M12x1.25OuterThread Inserts: M14x1.25PERFORMANCEMade of quality materials, durable and reliable in use. Not easy to rust, corrode or peel.Designed to make the car work well and improve work performance. The design is beautiful and elegant.INSTALLATION GUIDE:1. Match the intended thread repair kit.2. Check the size on the tap and inserts.3.