Brilliant Tools BT566001 2 Piece Set Spark Plug Thread Tool Kit

For cleaning and re-cutting rusted or damaged spark plug threads. Also suitable for glow plug threads or lambda probe threads. Included thread sizes are M10 x 1.0 - M12 x 1.25 and M14 x 1.50 - M18 x 1.5 mm., Manufacturer: BRILLIANT TOOLS