Dormer A147 HSS-E Cobalt High Speed Steel Drill Bit 4mm Pack of 10

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Dormer A147 HSS-E Cobalt High Speed Steel Drill Bit 4mm Pack of 10

This pack of ten 4mm drill bits delivers exceptional cutting performance and long-lasting durability for demanding drilling applications. The Dormer A147 is engineered from premium HSS-E cobalt steel, a material that retains its hardness even when drilling through tough materials such as stainless steel, alloy steels, and cast iron. The cobalt content provides enhanced heat resistance, reducing the risk of bit failure during high-speed operations and extending tool life significantly.

- Constructed from high-speed steel with 5% cobalt (HSS-E) for superior heat and wear resistance

- 135-degree split point for self-centering and reduced walking on contact

- Precision-ground flutes for efficient chip evacuation and smoother cutting

- Suitable for use on a wide range of materials including hardened steels and non-ferrous metals

- DIN 338 standard compliant for consistent geometry and performance

- Bright finish minimises friction and helps prevent binding in deeper holes

- Pack of 10 ensures you have spare bits for repetitive or sequential drilling tasks

Whether you are a professional tradesperson or a dedicated DIY enthusiast, these drill bits provide the reliability and precision you need for accurate hole creation in tough workpieces.

GTIN: 7320760690987