Inch

Metric

No of Teeth

Type

PCD

OD

PCD

OD

22

6F

2.206

2.152

56.02

54.65

24

6F

2.406

2.352

61.12

59.75

26

6F

2.607

2.553

66.21

64.84

28

6F

2.807

2.753

71.30

70.08

30

6F

3.008

2.954

76.39

75.13

32

6F

3.208

3.154

81.49

80.16

34

6F

3.409

3.355

86.58

85.22

36

6F

3.609

3.555

91.67

90.30

38

6F

3.810

3.756

96.77

95.39

40

6F

4.010

3.956

101.86

100.49

44

6F

4.441

4.357

112.05

110.67

48

6F

4.812

4.758

122.23

120.86

56

6WF

5.614

5.560

142.60

141.23

64

6WF

6.416

6.352

162.97

161.60

72

6WF

7.215

7.164

183.35

181.97

80

6A

8.020

7.966

203.72

202.35

90

6A

9.023

8.969

229.18

227.81