#28 Hi Roc Carbide Drill Bit

#28 (0.1405) x 15/16" LOC x 1-15/16" OAL Sub-Micron Carbide Drill Bit. 

TIALN Coated for super hardened and abrasive materials.
Titanium Aluminum Nitride is a hard, abrasion resistant coating.
Superior oxidation resistance provides unparalleled performance in high temperature machining.
Micro-hardness 3600 Vickers. Thermal Stability (750 deg. C or 1562 deg. F) Coefficient of Friction .45

Capable of producing reamer type finishes in abrasive materials such as: Chrome alloys, Heat treated alloys,
Nickel alloys, Titanium alloys, Steel & Stainless steel weldments. 

140 degree notched Drill Point. Made of premium submicron carbide with a blended 10% cobalt.

Little known secret!
This drill can be used for small holes in Onyx, hard stone, Super hard tile, rock and jewelry applications when used with a drill press.

Precision tight tolerance holes. +0.0000 / -0.0005

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