Drill bit

Drill bits are the cutters of drill tools. Bits are interchangeable, meaning that they can be removed from the end of the drill, either to replace a worn part or to change the size of the part.

Long series drill

long series drills are extended length drill bits. They are not optimized for drilling deep holes as they require frequent withdrawal to clear the flutes of swarf and prevent drill breakages, however used carefully they are more than satisfactory. Gun drills are the preferred drills for deep hole drilling.

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