Spark Plug Taps

Spark Plug Taps have a pilot thread at the front, to pull the tap into the hole, followed by the reamer section which removes the damaged threads and then by a larger tap section which cuts the proper threads for the Helical Coil spark plug insert to be installed. No prior drilling of worn out threads is needed with Helical Coil spark plug taps. HSS or HCS available.
Ideal for threading or re-threading spark plug holes.
Spark plug taps available in standard and metric thread.