JOBBER DRILL BIT, 4MM HSS CO LEFT HAND

Sutton Tools Left-Hand jobber drills feature a left hand helix for screw machine applications where spindles rotate counter-clockwise. Suitable for general-purpose drilling and can also be used to drill out broken bolts in conjunction with Sutton Tools screw extractors.

• Ideal for use with screw extractors
• Heavy duty left hand spiral flute design produces faster chip ejection
• Shorter drilling length designed for rigidity
• Shorter cutting lips reduce torque for drilling in high tensile strength materials.
• Made from HSS Co. The 5% cobalt formula improves abrasive & heat resistance, for increased strength at higher cutting temperatures
• Colour Tempered surface finish enables identification of cobalt tool material