550 NAS-Type Heavy-Duty Cobalt Straw Jobber-Length Drill Bit Set, 20-Pc, #80 to #61, 0.0135 in to 0.0360 in dia Cutting

Description

• Manufactured to NAS 907 Type J geometry aerospace specifications
• Heavy-duty construction for drilling in tough, high-tensile, and work-hardening materials
• Manufactured from premium cobalt high-speed steel
• Straw finish adds lubricity and easily identifies cobalt drills
• 135° P3 split point is self-centering for reduced thrust and easier penetration