Inch

Metric

30°

40°

45°

60°

75°

82°

90°

120°

150°

1"

3 mm

4 mm

6 mm

8 mm

10 mm

12 mm

14 mm

16 mm

18 mm

20 mm

25 mm

Carbide

Carbide-Tipped High-Speed Steel

Steel

Aluminum Titanium Nitride (AlTiN) Coated

Carbide Tipped

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Aluminum Silicon Nitride (TiAlSiN) Coated

Titanium Carbon Nitride (TiCN) Coated

Titanium Nitride (TiN) Coated

Uncoated

1"

1 5/16"

1 3/4"

1 7/8"

2"

2 1/2"

2 7/8"

2 15/16"

3"

3 3/4"

Yes

No

EAR99

0°

20°

30°

36° to 38°

37° to 39°

38°

41° to 45°

1/32" to 1/8"

3/64" to 1/4"

1/8" to 1/2"

3/16" to 3/4"

1/4" to 3/4"

1/4" to 1"

3/8" to 1 1/2"

1/2" to 1 3/4"

7/8" to 2"

1" to 3"

15°

20°

30°

38°

41°

45°

60°

75°

4

6