Time-Sert 1912 Metric Kit M9x1.25 Provided Insert length is 13.0 metric. Time Sert thread repair kits are approved by leading automotive manufactures. Time-Sert easily repairs stripped threads in cylinder head bolts, spark plug holes and oil drain pans as well. Many thread repair kits are available for your threaded bushing application in metric and american sizes. Time-Sert is the very best in thread repair! Time-Sert 1912 Thread Repair Kit Contains: Drill, Counterbore, Tap, Installation Driver, (5) Steel Inserts - Part # 19121. THIS IS NOT FOR A RECESSED THREAD HEAD BOLT REPAIR. PLEASE REFER TO MANUFACTURER KITS.