Dormer A777 HSS-E Cobalt Jobber Drill Bits 3.9mm Pack of 10

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Dormer A777 HSS-E Cobalt Jobber Drill Bits 3.9mm Pack of 10

Built for the most demanding professional and industrial environments, these Dormer A777 drill bits deliver exceptional durability and consistent cutting performance in tough materials. The 3.9mm diameter pack of ten offers outstanding value for repeated use in high-stress applications such as stainless steel, alloy steels, and titanium. With premium cobalt HSS-E construction, these bits withstand elevated temperatures and maintain sharpness far longer than standard HSS alternatives, reducing downtime and increasing productivity on the shop floor.

- 135 degree split point for immediate, accurate starting and reduced walking on curved surfaces

- Premium HSS-E (cobalt) material engineered for high heat resistance and extended tool life

- Precision ground flutes ensure efficient chip evacuation and smooth penetration

- Suitable for drilling stainless steel, high-tensile steels, and other hard-to-machine alloys

- DIN 338 type, jobber length for versatile general purpose and production use

- Straight shank design fits standard three-jaw chucks and quick-change systems

- Pack of 10 provides cost-effective replacement for batch drilling tasks

Ideal for engineers, toolmakers, and maintenance professionals who demand reliability under pressure, these drill bits are a trusted choice for consistent hole quality every time.

GTIN: 7320760375068