This tool cuts space for the sight screw head , allowing it to be countersunk into the metal. For use on sight ramps, scope bases or other firearm parts where a flush fastener is needed or desired.
- Cuts space for sight screw head (allows head to be countersunk into metal)
- Should be used in a drill press with all work held in precision fixtures for best results
- Description lists either hight speed steel or carbide. Carbide will last longer than high speed steel, however both must be used carefully as with any cutting tool.