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Bosch PRO HSS-G Extra Length Drill Bit 4.2mm Pack of 5

Bosch Professional

Compare today's prices on the "Bosch PRO HSS-G Extra Length Drill Bit 4.2mm Pack of 5".

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Last Updated: 06/10/2026
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Product Description

Compare today's prices on the "Bosch PRO HSS-G Extra Length Drill Bit 4.2mm Pack of 5".

Bosch PRO HSS-G Extra Length Drill Bit 4.2mm Pack of 5

Reach deeper into materials with confidence. This Bosch PRO HSS-G Extra Length Drill Bit in 4.2mm diameter is designed for drilling through thicker workpieces where standard bits fall short. It is the exact pre-drill diameter for M5 threads, making it an essential tool for precision metalworking, electrical installations, and maintenance tasks that require extended reach without compromising accuracy.

- Extra length design allows drilling in hard-to-reach areas, through multiple layers, or deep into timber and metal

- High-speed steel ground (HSS-G) construction provides sharp cutting edges and superior wear resistance for longer tool life

- 4.2mm diameter is the standard pilot hole size for M5 metric threads, ensuring a perfect fit for tapping

- Diamant-ground cutting edges deliver clean, burr-free holes with reduced friction and lower heat build-up

- Suitable for use in alloyed and non-alloyed steel, non-ferrous metals, cast iron, and rigid plastics

- Pack of 5 offers excellent value for professional tradespeople and serious DIY users

- Compatible with all standard 1/4 inch hex quick-change chucks and three-jaw drill chucks

- Manufactured to Bosch PRO quality standards for consistent performance and durability

Whether you are installing cable trays, fabricating metal frames, or completing precise threading tasks, this extra length drill bit set gives you the reach and reliability you need for a clean, professional finish.

GTIN: 3165140067072