SIZE

inch

1/2

3/4

1

11/4

11/2

2

21/2

3

4

6

mm

15

20

25

32

40

50

65

80

100

150

A

14

21

24

28.8

36

45

56.5

75.8

98

150

B

32

32

36.6

45.5

53.4

63

75.7

91.5

119.5

176

C

40

40

48

56

58

62

70

77

79

86

D

32.5

32.5

39

48

56

67

83

99.6

124

182

L

57

57

72

80

82

88

100

100.5

115

130