NO.1 H.S. Center Drills (1 DOZEN)

• Combined drill and countersink
• High speed steel
• 60° included angle
• Right hand cutting direction
• 1/8” body diameter, 3/64” drill diameter, and 1 1/4" overall length

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.

This center drill is made of ground high speed steel for good wear resistance with a hardness rating of Rc 58 - 60.