4.0mm HSS Cobalt Drill Bit

5% Cobalt - alloy high - efficiency twist drill with reinforced web. Specially suitable for drilling stainless steels, acid resisting steels, spring steel and austenitic steels.
Use with fixed machine and coolant wherever possible.

• Precision engineered for use on tough materials and hard steel
• Manufactured to DIN388 standards
• 135° split point tip for spot drilling without pre-centering
• Reduced drilling pressure required
• Excellent resistance to heat and wear
• Right hand cutting at 30°, Type N