The Draper Expert Cobalt Twist Drill is a selection of metric-sized high speed steel straight shank drills (with 5% cobalt). The addition of cobalt to HSS adds strength and wear resistance for longer life.
- Metric-sized steel shank drills
- Addition of cobalt to HSS improves strength and wear resistance
- For use with Metric Heli-Coil Thread Repair Kits
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