Drillpro M3-12 90 Degree Twist Step Drill Bit Two Stage Conutersunk Drill Sub-Step Drill

The countersunk head is made of HSS-6542, which can process metal or non-metal products below 30 degrees HRC,
such as cast iron, tool steel, copper and aluminum, alloy steel, iron, die steel and so on.

 

Material: HSS6542 (M2)

Sizes: OD (Hole Diameter)

M12: OD(14X20)

M10: OD (11X17.5)

M8: OD (9X14)

M6: OD (6.6X11)

M5: OD (5.5X9.5)

M4: OD (4.5X8)

M3: OD (3.4X6.5)

 

- Drilling steady, high efficiency, hole wall is smooth and chip evacuation unobstructed.

- Removed chip fast, drilling hole fast.