Spark Plug Thread Chaser Tool, Double-Ended Engine Spark Plug Tapper, Rust Re...

Spark Plug Thread Chaser Tool, Double-Ended Engine Spark Plug Tapper, Rust Resistance Insert Tap Repair Essential Tool with M10 x x M14 x x. First, apply the appropriate amount of grease, and then rotate the wrench until the resistance increases, and then counterclockwise micro-turn until there is a sound and then stop, select the appropriate screw sleeve and spark plug screwed in together, and finally placed the screw sleeve into the spark plug hole can be completed installation.