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60 Piece Type 150 M42 Cobalt Heavy Duty Jobber Length Drill Bit Set
Type 150 M42 Cobalt NAS 907J
- Manufactured from M42 HSS containing 8% cobalt which increases high red hardness.
- Cobalt drills require rigidly held positive feed drilling equipment.
- Manufactured to NAS 907J specifications.
- Sizes #1 to 60