General description Metric Sparkplug Thread Repair Kit M18.0 - 1.50 Pitch includes 6 inserts designed for repairing damaged spark plug threads. This kit is essential for maintaining engine performance by ensuring a secure fit for spark plugs. Technical specifications Thread size: M18.0 Pitch: 1.50 Insert length: 12.7 mm (1/2 in) Number of inserts: 6 Other information Please note that a tapping drill is not supplied with the kit.