Inch

Metric

0.18"

0.24"

0.31"

0.36"

0.49"

1"

1 1/8"

1 1/4"

1 5/16"

1 3/8"

1 1/2"

1 3/4"

1 7/8"

2"

2 mm

2.5 mm

3 mm

4 mm

5 mm

6 mm

8 mm

10 mm

12 mm

16 mm

20 mm

1"

1 1/4"

4 mm

6 mm

8 mm

10 mm

12 mm

16 mm

20 mm

1 1/2"

2"

2 1/2"

2 5/8"

2 7/8"

3"

3 3/8"

3 1/2"

3 3/4"

3 7/8"

4"

4 1/4"

4 1/2"

5"

5 1/2"

6"

6 1/2"

8"

8 1/2"

12"

55 mm

57 mm

63 mm

72 mm

75 mm

80 mm

83 mm

89 mm

92 mm

100 mm

104 mm

109 mm

115 mm

150 mm

Carbide

Carbide-Tipped High-Speed Steel

Steel

0.015"

0.016"

0.02"

0.023"

0.03"

0.031"

0.047"

0.06"

0.063"

0.09"

0.12"

0.125"

0.19"

0.25"

Aluminum Titanium Nitride (AlTiN) Coated

Carbide Tipped

Diamond Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Aluminum Silicon Nitride (TiAlSiN) Coated

Titanium Carbon Nitride (TiCN) Coated

Uncoated

10° to 43°

15°

20°

30°

33°

36°

37°

41°

45°

1 1/2"

2"

2 1/2"

2 5/8"

2 7/8"

3"

3 3/8"

3 1/2"

3 3/4"

3 7/8"

4"

4 1/4"

4 1/2"

5"

5 1/2"

6"

6 1/2"

8"

8 1/2"

12"

55 mm

57 mm

63 mm

72 mm

75 mm

80 mm

83 mm

89 mm

92 mm

100 mm

104 mm

109 mm

115 mm

150 mm

EAR99

90°

0.717"

1"

1.21"

1.453"

1 5/8"

1 3/4"

2 1/8"

2 3/8"

2.44"

2 5/8"

2 7/8"

2.927"

3 1/8"

3 3/8"

3 1/2"

3 5/8"

4 3/4"

4 7/8"

6 1/2"

6 3/4"

7"

22 mm

24 mm

28 mm

33 mm

45 mm

56 mm