เล็บ

Length

Diameter

Inches

mm

BWG

0.5"

12.7

20/19/18

0.75"

19

19/18/17

1"

25.4

17/16/15/14

1.25"

31.7

16/15/14

1.5"

38

15/14/13

1.75"

44.4

14/13

2"

50.8

14/13/12/11/10

2.5"

63.5

13/12/11/10

3"

76.2

12/11/10/9/8

3.5"

88.9

11/10/9/8

4"

101.6

9/8

4.5"

114.3

8/7

5"

127

7/6

6"

152.4

6/5

7"

177.8

5/4