AVG
Diameter

No. of Teeth

Point
Width
P_W

Body
Distance
K

Taper-bore
diameter
D

Taper

Cutting
depth

3.5″

8

86.1～96.1

37.306

25.4

1∶12

8

4.5″

8

110.5～120.5

48.674

25.4

1∶12

9.5

5″

8

123.67～133.17

55.024

25.4

1∶12

9.5

6″

12

149.07～158.57

67.724

58.196

1∶24

12.7

7.5″

12

166.34～180.84

74.48

58.196

1∶24

12.7

179.04～193.54

80.83

191.74～206.24

87.18

9″

12

204.44～218.94

93.53

58.196

1∶24

14.2

16

210.79～225.29

96.705

223.49～237.99

103.055

233.65～248.15

108.135

246.35～260.85

114.485

12″

16

265.15～283.65

122.43

126.96

1∶24

19.4

20

280.39～298.89

130.05

298.17～316.67

138.94

313.41～331.91

146.5

14″

20

323.2～341.2

152.738

126.96

1∶24

25.4

24

341～357

161.625

356.3～372.3

169.245

16″

24

380.99～403.49

180.35

126.96

1∶24

25.4

398.77～421.27

189.24

414.01～436.51

196.86

18″

24

438.388～466.888

205.524

215.8

—

25.4

450.004～478.564

211.362

458.7～487.2

215.68

21″

28

510.364～538.864

241.512

215.8

—

34

523.064～551.564

247.862

533.224～561.724

252.942