Precision Twist Drill 5999971 Cobalt Jobber Length Drill Bit Set

The Precision Twist Drill 5999971 is a professional-grade cobalt jobber length drill bit set designed for demanding metalworking, fabrication, and industrial drilling applications. Manufactured by Precision Twist Drill (PTD), a trusted name in cutting tools, this set delivers consistent performance when drilling through tough materials including stainless steel, cast iron, titanium, and other hard alloys.

Key Features:

• Cobalt Construction: High-speed steel with cobalt alloy content provides superior heat and wear resistance for extended tool life
• Jobber Length Design: Standard jobber length geometry offers versatility across a wide range of drilling applications
• 135° Split Point Tip: Reduces walking and allows for self-centering starts without a pilot hole or center punch
• Gold Oxide or Bright Finish: Surface treatment reduces friction and protects against corrosion
• Precision Ground Flutes: Ensures tight tolerances and smooth chip evacuation for cleaner holes
• Suitable for use in hand drills, drill presses, and CNC equipment

Precision Twist Drill has been manufacturing high-quality cutting tools since 1882, and this set reflects their commitment to tight tolerances and professional-grade performance. Ideal for machinists, maintenance technicians, fabricators, and serious DIYers who demand reliability in every hole.