PRODUCT INFORMATION:
Thread Format: Metric
Material: High Speed Steel
Tap Type: Bottoming Tap
Drive Shaft: 1/4" Square Drive
Flute: Straight
Color: Silver Tone, Gold Tone
Total Length: 7.6cm / 2.99"
Tap Thread Width: 9mm / 0.35"
Tap Thread Diameter: 12mm / 0.47"
Tap Pitch: 1.0
Tap Thread Length: 2.5cm / 0.98"
Screw Thread Pitch: 1.0
Screw Thread Diameter: M10
Screw Thread Length: 17mm / 0.67"
Inner Thread Inserts: M10x1.0
OuterThread Inserts: M12x1.0

PERFORMANCE:
Made of quality materials, durable and reliable in use. Not easy to rust, corrode or peel.
Spark plug thread repair kit universal used for automotive engine fixing. Simple and fast to repair of defective spark plug threads, to obtain a new highly stable and long-lasting internal threads caused by wear, rust, and misalignment.

INSTALLATION GUIDE:
1. Match the intended thread repair kit.
2. Check the size on the tap.
3. Drill out the damaged bore or thread for the thread you are intended to restore(Drill tool NOT included)
4. Clean the hole with cleaning cloth or aerosol, make sure no swarf is left in the hole.
5. Slightly run the tap into the hole, from the bottom tapered cutting edge, to the correct depth by hand or on a machine tool of 1/4" square drive.
6. Clean the thread, ensuring no swarf is left in the hole.
7. Check the size of inserts, then screw in the threaded repair insert using the insertion tool.
8. Clean the thread and remove dust and debris.
9. You are ready to have a repaired thread.

NOTICE:
Due to manual measurement, the size deviation is about 1-2 mm.