1、Good‑quality materials and high‑speed steel structure ensure durability of the tap die set. 2、All cutting teeth have been accurately CNC machined, and have undergone an accurate hardness 60 HRC heat treatment to obtain the best thread processing performance. 3、The package includes a storage box for easy transportation and safe storage. 4、Tap die set can be used to cut cast iron, steel, aluminum, copper and other materials. 5、The package includes 20 taps, 20 dies, 1 die hinge, 1 tap hinge, 1 T-type tap hinge, 1 round die bands, 1 screwdriver and 1 storage box, fully equipped. 20 x Tap20 x Die1 x Die Hinge1 x Tap Hinge1 x T Type Tap Hinge1 x Round Die Bands1 x Screwdriver (Random Color)1 x Storage Box (Random Color) Item Type: Tap Die SetImperial System:System: Imperial SystemFunction: SqueezeThread Type: Fine ThreadTap Size:Wire 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 (One Wire Tap And One Die)Metric:System: MetricFunction: SqueezeThread Type: 55° Cylindrical Pipe ThreadWire Tap + Die: M6X 1.0; M6X 0.75; M8X 1.25; M8X 1.0; M10X 1.5; M10X 1.25; M12X 1.75; M12X 1.5; M14X 2.0; M14X 1.5; M16X 2.0; M16X1 .5; M18X 2.5; M18X 1.5; M20X 2.5; M20X 1.5; M22X 2.5; M22X 1.5; M24X 3.0; M24X 1.5; (One Wire Tap And One Die)