STRONG TUNGSTEN STEEL ALLOY: Gunpla tap and die set is made of tungsten hardened steel alloy. These heat treated taps and dies with accessories are made to be extra hard, with high strength and improved durability to be used for many years without replacement Easy threading and tapping: With this set of metric taps and dies, use easily taps for cutting a thread inside a hole or forming female portions of mating tools such as nuts. Heavy-duty dies cut or form a male part like bolts. Our tap and die set is designed to help perfectly cut new damaged internal and external threads Widely Applicable Taps and Dies: These high quality taps and dies can thread any metal with efficient results. Solid metals that can be tapped or threaded include aluminum, brass, carbon alloy steel, cast iron, and bronze. This hardened thread set is relatively easy to use, offering less fatigue and has high resistance to corrosion and wear Package Contents: This tap and thread set includes 9 metric dies; M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.25, M9x1.25, M10x1.5, M12x 1.75mm. and 9 S metric taps: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M7 x 1.0, M8 x 1.25, M9 x 1.25, M10 x 1.5, M12 x 1.75mm. In this tap set, a die holder and a tap wrench have been added to complete the set and help you make your tasks more convenient Convenient storage and accessories: our 20-piece set of taps and dies in tungsten steel comes in a perfectly designed sturdy storage case which has its interior part molded to fit every part and keep it safe. Gunpla is an established global manufacturer and supplier of hand tools and renovation products. Our engineers always strive to provide you with the most comprehensive, durable and high quality tools to help you with your daily projects. Our goal is to provide well-designed and cost-effective tools to customers around the world. Make Gunpla tools part of your life.