Thread size: M5 X 0.8mm. Thread inserts material: Stainless steel. 20PC x Wire thread inserts. Thread tap and the drill material: HSS (High-speed Steel). To repair a spark plug thread no Pre-drilling is necessary if using the special Spark Plug Tap.
30PCS M5 Thread Repair Kit M5 x 0.8mm Helicoil Insertion Tool Thread Restorin
25 X M5 HELICOIL Type Thread Repair Inserts M5 x 0.8
M5 x 0.8 Metric Thread Repair Install Tool Insert Kit M5 Helicoil Coil 25PCS US
25PCS M5 x 0.8 Metric Thread Repair Install Tool Insert Kit M5 Helicoil Coil
30pcs M5 Thread Repair Kit Helicoil Inserts and Tools M5 x 0.8mm Stainless Steel
25PCS M5 x 0.8 Metric Thread Repair Install Tool Insert Kit M5 Helicoil Coil New
