Dormer A777 HSS-E Cobalt Jobber Drill Bits 7.7mm Pack of 10

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Dormer A777 HSS-E Cobalt Jobber Drill Bits 7.7mm Pack of 10

These Dormer A777 drill bits are engineered for demanding professional and industrial applications, delivering exceptional durability and consistent performance even in high-stress machining environments. With premium HSS-E cobalt construction, they provide superior heat resistance and extended tool life when drilling tough materials such as stainless steel, alloy steels, and hardened metals.

- Premium HSS-E (high-speed steel with 8% cobalt) for enhanced hardness and heat resistance

- 135-degree split point eliminates walking, reduces thrust, and improves hole accuracy

- Fully ground flutes ensure efficient chip evacuation and a smooth cutting action

- Jobber length design offers excellent stability for general-purpose drilling

- Suitable for use on stainless steel, carbon steel, cast iron, and non-ferrous materials

- Pack of 10 provides consistent quality and cost-effective replenishment for the workshop

- High-performance coating resistance to wear and galling under heavy feeds

- Precision-ground geometry guarantees concentricity and clean, burr-free holes

- DIN 338 compliant for interchangeability and standardised dimensions

Ideal for engineers, fabricators, and maintenance teams who need reliable drill bits that can handle repeated use on challenging workpieces without losing edge retention.

GTIN: 7320760375488