M-118-Sink & Step Drills For Screw Thread-90 degrees
Model :
M-118
Sink & Step Drills For Screw Thread-90 degrees ˚- TAIWAN SU'S Drill
l Specially designed drills that are suitable for drilling cone holes for general screws and hexagonal head screws.
l Allow for two machining processes accomplished by one process, and provide superior concentricity