Guhring - 0.255mm, 118° Point, Cobalt Micro Drill Bit

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.

Titanium Nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials. The heat and hardness resistance allows the tool to run at higher speeds than uncoated tools.

Spiral flute reamers are used in blind and through-hole operations. They are used to bridge interrupted cuts.

Regular, also known as medium spiral bits, are used in general purpose applications. They are used on soft, nonferrous materials.