Description Time-Sert 4010 M10 x 1.0mm Metric Spark Plug Thread Repair Kit. Time Sert thread repair kits made in United States. Time Sert 4010 thread repair kit The M10x1.0 spark plug repair kit p/n 4010 tooling is more suited for holes that are 3 or 4 inches in depth. Inserts not included order separately. THIS KIT DOES NOT CONTAIN INSERTS. PLEASE ORDER YOUR INSERTS FROM THE LINKS BELOW. Click here: for video instructions  Order Washer Seat Inserts Click Here Get Useful Tools, Tap Guides, and More Click Here  Click Here For Instructions