40-piece set includes:
(7) national coarse dies:
1/4"-20
5/16"-16
3/8"-14
7/16"-20
1/2"-13
9/16"-12
5/8"-11

(7) national fine dies:
1/4"-28
5/16"-24
3/8"-24
7/16"-20
1/2"-20
9/16"-18
5/8"-18

(6) metric dies:
6-1.00 mm
8-1.25 mm
10-1.50 mm
12-1.25 mm
12-1.50 mm
12-1.75 mm

(6) national coarse taps
1/4"-20
5/16"-18
3/8"-16
7/16"-14
1/2"-13
9/16"-12

(6) national fine taps:
1/4"-28
5/16"-24
3/8"-24
7/16"-20
1/2"-20
9/16"-18

(6) metric taps:
6-1.00 mm
8-1.25 mm
10-1.50 mm
12-1.25 mm
12-1.50 mm
12-1.75 mm

(1) standard rethread file, 8 sizes: 11, 12, 13, 14, 16, 18, 20, 24 threads per inch

(1) metric rethread file, 8 sizes: 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 2.50, 3.00 mm per thread

(1) blow molded case