Spark Plug Thread Chaser Tool M10 x 1.0/M12 x 1.25 M14 x 1.5/M18 x 1.5

If you have a stripped or cross threaded plug hole, these will save you bucks and time....Start them in, put a socket on them, go slowly, in and back out and walla....A new threaded plug hole.....Clean out any shavings that might happen and replace the plug....Works great.

Not extremely sharp like a tap that would make threads but will work to restore threads that have been damaged.I used it on an 02 sensor hole that was pretty messed up and it allowed me to install a new sensor. would not have been able without this tool.

Works great, seems plenty heavy duty for my small shop work and more. Pleased with the product.

The sizing in the m14 thread is m14x1.25 not m14x1.5 as advertized. The is made well and performs as it is supposed. The listed information in the thread pitch is incorrect though.

made of good hard material

I bought these for just in case. But these are nice tools and no doubt will be using them alot.

Have not had a chance to use them. But seem well made and solid.

Only used it once good value for the price