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Driving face has 1º negative angle to keep guides from mushrooming while being driven - Pilots are slightly smaller than guide I.D. to remove easily without scratching bore
- Corrosion resistant finish
- Rockwell hardness of 45 - 50
- 6" overall length
- 4 Piece set includes size from .312" to .437" guide OD
- Other sizes also available
Driving face has 1º negative angle to keep guides from mushrooming while being driven