The Blue Spot Tools Spark Plug Thread Chaser is manufactured from heat treated carbon steel for increased durability and consists of 2 of the most popular sizes 14mm and 18mm. The perfect tool for restoring threads and cleaning carbon deposits and corrosion build up. Can repair cross thread damage from careless spark plug insertion or removal, to be used with 21mm deep socket.

Manufactured from carbon steel for increased durability
Two most popular sizes - 14mm and 18mm
Cleans carbon deposits and corrosion build up
Restores threads
To be used with 21mm deep socket