Cobalt Drill Bit - 4.2mm HSS (DART)
Cobalt Metal drill bits 4-2mm HSS - (Dart) - These High Quality Twist Drills are Ideal For Drilling Steel and other Tough Materials and Metals
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Precision engineered for use on steel and other tough materials.
Manufactured to DIN338 standards.
Pre-centring not required.
Reduced drilling pressure needed.
Efficient resistance to heat