Compatible with Ford Triton 19962003 38900 Two Valve Tool Kit comes with M141.25 inserts and is for Ford models 19962003. The spark plug tool kit is used for 4.6liter, 5.4liter, and 6.8liter V10 dual valve engines, and part numbers 389100 Professional Spark Plug Thread Repair Kit Thread Spark Plug Thread Repair Kits solves the problem of cylinder head damage caused by cracked spark plugs, the professional tool can help you repair the threads and replace the corresponding inserts Meet Your Repair Needs The 8 * M141.25 blade of the 38900 Two Valve Tool Kit has high hardness and is treated with black oxidation on the surface to prevent rust. The drill bit, faucet are made of steel Package Including Spark plug repair kit includes Cylinder Leak Tester*1, Line up Guide*1,Twist Drill*1, Screw Tap*1, Snap Iron Pieces*2, M141.25 Inserts*8,Replace Nozzle*1 Note Please make sure that the valves of the motor are closed with the help of a cylinder leakage tester and remove the metal shavings in the cylinder after each step to check and to make sure that there will be no damage to the motor