Diameter

Teeth

Diameter

Teeth

MM

Inch

No.

MM

Inch

No.

25

1

4

68

2 11/16

6

30

13/16

6

80

3

6

35

1 3/8

6

90

3 1/2

6

40

19/16

6

100

4

6

45

1 3/4

6

125

5

6

50

2

6

150

5 7/8

6

65

2 1/2

6