Dormer A321 HSS Steam & Bronze Tempered Drill Bit 3.3mm Pack of 10

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Dormer A321 HSS Steam & Bronze Tempered Drill Bit 3.3mm Pack of 10

When you need reliable, repeatable performance in medium-depth drilling, the Dormer A321 Heavy Duty HSS Drill delivers exceptional durability and precision. Each 3.3mm bit is crafted with a steam and bronze tempered finish that extends tool life and reduces heat build-up, making it ideal for use in general engineering, maintenance, and fabrication tasks where consistent hole quality matters across ferrous and non-ferrous materials. The tri-flat shank design provides superior grip and prevents slipping in the chuck, giving you confidence during fast, high-torque drilling operations.

- Heavy duty high-speed steel (HSS) construction for long-lasting sharpness

- Steam and bronze tempered surface treatment reduces friction and resists wear

- Tri-flat shank ensures secure, non-slip clamping in standard and three-jaw chucks

- Optimised point geometry for accurate self-centring and clean entry

- Designed for medium-depth drilling in steel, cast iron, stainless steel, and alloys

- Pack of 10 individual bits in a durable storage wallet for easy organisation

- 3.3mm diameter suitable for precise hole sizing and tapping preparations

Whether you are a professional tradesperson or a dedicated DIY enthusiast, this pack gives you the consistency and value needed to complete your drilling tasks efficiently.

GTIN: 3603607071960