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The short flutes on these jobbers'-length bits provide increased rigidity for drilling straighter holes.
Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'-length drill bits.
The short flutes provide increased rigidity for drilling straighter holes than standard extended-length drill bits.
The parabolic spiral flutes lift chips out of the hole, reducing clogging and improving coolant flow.
These jobbers'-length bits have the rigidity and length required for most applications.
Holes in these bits allow coolant to be run through the tool for more efficient chip evacuation. Use them in CNC machines with coolant-through technology.
Specially-designed flutes keep these bits centered as they drill, resulting in straighter, rounder holes with tighter tolerances. Also known as double-margin drill bits.
With better heat and wear resistance than high-speed steel, cobalt steel bits can run up to 25% faster and have a longer tool life.
Use these bits for general purpose drilling in most material.
In addition to resisting heat and wear better than high-speed steel drill bits, these can also run up to 25% faster and have a longer tool life. Insert them into power screwdrivers, impact drivers, and other tools that accept hex shanks.
Cobalt steel bits are heat resistant and maintain their sharp edges when drilling hard material. They are for use in both hand-held drilling and machine-tool applications.
Harder, stronger, and more wear resistant than cobalt steel, solid-carbide bits maintain their sharp edges longer. They require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications.
These bits have short flutes and a sturdy construction which prevent snagging that deforms sheet metal and thin-wall tubing.
When one end becomes worn, reverse the bit to use the other end.
Three drill points allow these bits to separate spot-welded panels without damaging the bottom panel.
For the highest accuracy and longest tool life, these solid-carbide bits are harder, stronger, and more wear resistant than high-speed steel, cobalt steel, and carbide-tipped bits.
Enlarge existing holes without changing their depth.
Enlarge existing holes without changing the depth.