Length

gauge

inches

mm

B.W.G

3/8

9.525

19/20/

1/2

12.700

20/19/18

5/8

15.875

19/18/17

3/4

19.050

19/18/17

7/8

22.225

18/17

1

25.400

17/16/15/14/

1-1/4

31.749

16/15/14/

1-1/2

38.099

15/14/13

1-3/4

44.440

14/13/

2

50.800

14/13/12/11/10

2-1/2

63.499

13/12/11/10

3

76.200

12/11/10/9/8

3-1/2

88.900

11/10/9/8/7

4

101.600

9/8/7/6/5

4-1/2

114.300

7/6/5

5

127.000

6/5/4

6

152.400

6/5

7

177.800

5/4