Dormer A321 HSS Steam & Bronze Tempered Drill Bit 3.5mm Pack of 10

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Dormer A321 HSS Steam & Bronze Tempered Drill Bit 3.5mm Pack of 10

Designed for consistent performance in medium-depth drilling applications, this pack of ten Dormer A321 heavy duty HSS drill bits delivers the durability and precision you need for reliable results in tough materials. Each 3.5mm bit is steam tempered and bronze finished to reduce friction and heat build-up, extending tool life and maintaining sharpness through repeated use. The tri-flat shank provides positive grip and prevents slippage in three-jaw chucks, ensuring accurate drilling without frustration. Whether you are working on steel, cast iron, or non-ferrous metals, these bits offer the stability and cutting edge retention required for professional or demanding DIY projects.

- Tri-flat shank design for secure chuck engagement and reduced slippage

- Steam tempered and bronze finish for enhanced heat resistance and lubrication

- Heavy duty high speed steel (HSS) construction optimised for medium-depth drilling

- 3.5mm diameter suitable for a range of general engineering and maintenance tasks

- Pack of 10 for convenience and value

- Manufactured to Dormer’s stringent quality standards for consistent cutting performance

Ideal for tradespeople and serious hobbyists who require dependable drill bits that stay sharp longer.

GTIN: 3603607071984