Durable: The 40-piece thread cutting set made of carbon steel ensures durability and longevity. Versatile - Ideal for threading common materials with a strength of up to approx. 900 N/mm², such as steel, cast steel, cast iron, non-ferrous metals, plastics, softwood and hardwood as well as sintered. Multiple options - In addition to the usual metric dies, this kit contains numerous dies in different sizes for different thread hole sizes as well as many fine thread sizes. Convenient and practical - fully sorted in the practical storage box. The taps are supplied in a sturdy plastic case for your convenience and storage. Widely used - This is a great tool set, a great assortment for the service van or workshop.