Feature: 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. Specification: Item Type: Tap Die Set Imperial System: System: Imperial System Function: Squeeze Thread Type: Fine Thread Tap 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: Metric Function: Squeeze Thread Type: 55° Cylindrical Pipe Thread Wire Tap + 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; (One Wire Tap And One Die). Package List: 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)