* The tool uses the better threads at the base of the spark plug port and greatly reduces the chance of debris from falling into the cylinder
* Cleans and rethreads sparkplug ports from the inside out
* Use the good threads at the base of the port. Reduced dirt and metal from being driven into the cylinder head
* It's unique design allows for chasing spark plug threads from inside the cylinder head and working outward
* Use the good threads ar the vase of the part
* Reduced dirt and metal from being driven into the cylinder head
* Use light grease on the end to trap filings and keep tool easy to use

* Length of 260mm(10") allows for deep well plugs