Drill/Countersink Plain Included Angle 60 Degrees Size #4 Point Dia 1/8 In. Body Dia 5/16 In. Overall Length 2-1/8 In. Cutting Direction Right Hand Material High Speed Steel Finish Uncoated Number of Pieces 1 For Use with Inserts for Producing Center Holes In Components As Well As Facing The Surface of The Workpiece Thus Combining Two Machining Operations Into One