118-piece set for M6 to M14, especially for spark plug threads. Contents include 25 threaded inserts each of M6 x 1 mm x 9 mm, M8 x 1.25 mm x 12 mm, and M10 x 1.5 mm x 15 mm; 10 threaded inserts of M12 x 1.75 mm x 18 mm; and 5 threaded inserts each of M14 x 1.25 mm x 8.4 mm, M14 x 1.25 mm x 12.4 mm, and M14 x 1.25 mm x 16.4 mm. The set also includes 4 twist drills, 5 thread cutters, 5 assembly tools, and 4 pin breaking tools. This product is designed for thread reinforcement in materials with low shearing resistance and is suitable for applications in machine construction, automotive engineering, electrical, and medical engineering. Made from chrome-nickel stainless steel, it provides durable inside threads that resist weathering and corrosion. The set comes in a plastic box with a net weight of 2 kg, ideal for the repair of damaged or worn-out threads and the reuse of rejects. Total number of tools: 118.