Tool set for repairing stripped, damaged, or defective threads. Suitable for stripped threads on the engine and spark plug threads in the cylinder head, particularly suitable for stripped threads, e.g., on the engine and spark plug threads in the cylinder head. Mounting accessories: 5 x twist drills, 5 x taps for threaded inserts, 5 x mounting tools for threaded inserts/threaded sleeves, 5 x drive breakers. 110 x threaded inserts: M5 0.8 x 6.7 mm, M6 1.0 x 10.8 mm, M8 1.25 x 10.8 mm, M10 1.5 x 13.5 mm, M12 1.75 x 16.3 mm. Repair set for repairing threads.