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- Primarily designed for tapping thru holes
- The spiral point forces the chips ahead of the tap
- Recommended for all types of aluminum alloys
- Made from Premium High Speed Steel and CrN Coated
- Thread Length: 5/16
- Size: 4-48-H1
- Number of flutes: 2
- Total Length: 1 7/8
- Neck Length: 1/4