Feature:1. Good-quality materials and durability, high-speed steel structure ensures durability and tool life2. Excellent cutting performance, all cutting teeth have been accurately CNC machined, and have undergone an accurate hardness 60 HRC heat treatment to obtain the best thread processing performance3. Rugged and durable, the cutter head is made of hardened alloy steel, with maximum strength and longevity4. Tap die set can be used to cut cast iron, steel, aluminum, copper and other materials5. Heavy-duty plastic blow-molded suitcase for easy transportation and safe storageSpecification:Item Type: Tap Die SetBritish System: System: British systemFunction: SqueezeThread Type: Fine threadTap Size: Tap + Die: 1/4NC20; 1/4NF28; 5/16NC18; 5/16NF24;3/8NC16; 3/8NF24; 7/16NC14; 7/16NF20; 1/2NC13;1/2NF20; 9/16NC12; 9/16NF18; 5/8NC11; 5/8NF18;3/4NC10; 3/4NF16; 7/8NC9; 7/8NF14; 1NC82; 1NF14 (tap and die one of each)Metric: System: MetricFunction: SqueezeThread Type: 55 cylindrical pipe threadTap + Die: M6X1.0; M6X0.75; M8X1.25; M8X1.0; M10X1.5; M10X1.25; M12X1.75; M12X1.5; M14X2.0; M14X1.5; M16X2.0; M16X1 .5; M18X2.5; M18X1.5; M20X2.5; M20X1.5; M22X2.5; M22X1.5; M24X3.0; M24X1.5 (tap and die one of each)Storage Box Size(LxWxH): Approx. 41 x 37 x 8cm / 16.1 x 14.6 x 3.1in.Package List:20 x Tap20 x Die1 x Die Holder1 x Tap Hinge Hand1 x T-Type Tap Hinge Hand1 x Round Die Adaptor1 x Screwdriver1 x Storage BoxNote:Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.