Inch

Metric

1"

1 1/4"

2"

3 mm

4 mm

6 mm

8 mm

10 mm

12 mm

14 mm

16 mm

18 mm

20 mm

25 mm

Carbide

Steel

Aluminum Titanium Nitride (AlTiN) Coated

Black Oxide

Diamond Coated

Diamondlike Carbon (DLC) Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Aluminum Silicon Nitride (TiAlSiN) Coated

Titanium Carbon Nitride (TiCN) Coated

Titanium Diboride (TiB₂) Coated

Titanium Nitride (TiN) Coated

Uncoated

15°

20°

29° to 31°

30°

33°

35°

35° to 38°

36°

36° to 38°

36° to 39°

37°

37° to 39°

38°

41°

41° to 45°

EAR99

Coarse

Fine

0.015"

0.03"

0.031"

0.062"

0.5 mm

1 mm

60°

90°

1"

1 1/4"

1 1/2"

2"

1"

1 1/8"

1 1/4"

1 3/8"

1 1/2"

1 5/8"

1 23/32"

1 3/4"

1 7/8"

1 61/64"

2"

2 1/4"