Bordo Left Hand Jobber Drill Bit HSS-Co5 Cobalt

• Bordo Fractional Left Hand Cobalt Tough Hss-Co5 Jobber Drills Ansi B94-11.
• 135° Split Point (crankshaft point).
• The split point is self-centering and the short distance from the drill axis to the outer corners results in faster penetration, reducing the need for end thrust.
• The 135° point should be used to cut harder steel materials, especially in deep hole applications.
• In these situations, it will produce thicker chips minimising work hardening of the cavity.
• Faster penetration reduces abrasion and friction along the cutting edges.
• Cobalt HSS jobber drills are extremely hard and provide superior performance and increased tool life, especially in stainless steel and high tensile steel.

Usage

• Left-Hand jobber drills are ideal for use with screw extractors to remove broken bolts and screws.
• Drill bit surface treatment.