Feature 1VERSATILE THREADING SOLUTION: This tap and die set is used to create new threads, chase existing threads, or repair damaged threads on most metals like aluminum, brass, bronze, cast iron, mild steel, carbon steel, stainless steel and more. 2INDUSTRIAL GRADE DURABILITY: Constructed from hardened GCr 15 alloy steel, this set offers maximum strength and durability. It meets ANSI ASME B1.1 standards, ensuring you receive the tool kit that can withstand extensive use. 3PRECISE ENGINEERED CUTTING TEETH: All cutting teeth are precisely CNC machined and accurately heat treated to achieve a high hardness of 60 HRC, providing superior threading performance and ensuring clean, accurate threads every time. 4USER FRIENDLY DESIGN: Designed for ease of use, this tap and die set is suitable for both professionals and enthusiasts. The intuitive design allows for quick setups and efficient use, making threading tasks simple and effective. 5COMPREHENSIVE RANGE: This set includes a wide variety of taps and dies to accommodate different sizes and threading requirements, making it a must have addition to any toolbox for tackling various metalworking projects.Item Type: Tap and Die SetMaterial: Alloy steelSize: 4 to 1/2 inchPackage Including: Includes unc cool, UNF-FINE, and NPT threadsIncludes a full range of most commonly used tap and die sizes for unified screw threads (UN-Series)Coarse Thread (UNC): 4-40, 6-32, 8-32, 10-24, 12-24, 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13Fine Thread (UNF): 10-32, 1/4-28, 5/16-24, 3/8-24, 7/16-20, 1/2-20Pipe Thread (NPT): 1/8-27 .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Tap and Die Set (40pcs)1 x Blow Molded Case