45Pcs Tap Die Set with Fine/55° Cylindrical Pipe Threads Hardware Tools for CraftsmanImperial System 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)