Chicago Latrobe 550 Cobalt Steel Jobber Drill Bit, Gold Oxide Coated, Round Shank, 135 Degree Split Point, 11/16" Size Reviews
Chicago Latrobe 550 Cobalt Steel Jobber Drill Bit, Gold Oxide Coated, Round Shank, 135 Degree Split Point, 11/16" Size Feature
- Heavy-duty construction for drilling in tough, high-tensile, and work-hardening materials under extreme operating conditions
- Manufactured from premium 8 percent cobalt (M42) high-speed steel increasing hot hardness and extending drill wear life
- 135 degree P3 split point is self-centering for reduced thrust and easier penetration
- Manufactured to NAS 907 type J aerospace specifications
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
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Mar 28, 2011 13:27:05
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