These have some signs of use, but they appear to still be in working condition. If you have questions or want to see better pictures, feel free to reach out.
Helicoil 5523-18 18-1.5mm Spark Plug Hole Kit
Helicoil SPARK PLUG HOLE KIT 18-15MM 5523-18
Lisle 65200 Spark Plug Hole Repair Kit, Deep Alum Head M14x1.25
Stomski Racing Porsche 911 Spark Plug Hole Repair Kit, Used Once
Performance Tool Spark Plug Hole Thread Chaser - 18mm W80539
2PCS Spark Plug Hole Threader Chaser 14mm 18mm Re-threader Tap Repair Tool Set
