Inch

Metric

1"

1 1/4"

4.8 mm

6 mm

9.5 mm

10 mm

12 mm

12.7 mm

13 mm

15.9 mm

16 mm

19 mm

20 mm

25 mm

25.5 mm

Carbide

Carbide-Tipped Steel

Cast Iron

Steel

Aluminum Chromium Nitride (AlCrN) Coated

Aluminum Oxide Coated

Aluminum Titanium Chromium Nitride (AlTiCrN) Coated

Aluminum Titanium Nitride (AlTiN) Coated

Black Oxide

Carbide Tipped

Diamondlike Carbon (DLC) Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Aluminum Oxygen Nitride (TiAlON) Coated

Titanium Carbon Nitride (TiCN) Coated

Titanium Diboride (TiB₂) Coated

Titanium Nitride (TiN) Coated

Uncoated

0.160"

0.202"

0.252"

0.318"

0.383"

Yes

No

EAR99

1"

0.000"

0.002"

0.003"

0.004"

0.005"

0.006"

0.007"

0.008"

0.009"

0.010"

0.011"

0.013"

0.015"

0.017"

0.020"

0.039"

0.079"

0.087"

0.094"

0.118"

0.122"

0.145"

0.15"

0.157"

0.161"

0.187"

0.195"

0.197"

0.201"

0.236"

0.252"

0.315"

0.354"