- Driving face has 1 degree negative angle to keep guides from mushrooming while being driven
- Pilots are slightly smaller than guide I.D. to remove easily without scratching bore
- Pilot approximately 1 inch long
- Corrosion resistant finish
- Rockwell hardness of 45 – 50 – 8″ OAL
Due to the nature of these valve guide drivers, they cannot be warranted against breakage, but are guaranteed for dimensional accuracy.