- Overview: This set includes five different sizes of combined drills and countersinks, commonly called center drills. They are used to produce a center hole on a workpiece for turning between centers.Center drills are also used to start drilled holes. Because they are very stiff they don’t have a tendency to wander.
- Sizes: The set is high speed steel and includes sizes 1, 2, 3, 4, and 5. These are 60 degree center drills with a right hand cutting direction. Each center drill is made of ground high speed M42 cobalt steel for good wear resistance.
- Tips: Combined drills and countersinks, commonly called center drills, are used to produce a center hole on a workpiece for turning between centers. Center drills are also used to start drilled holes. Because they are very stiff they don’t have a tendency to wander.
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