BOSCH Drill Bit 4.2mm HSS-Co (10 pcs pack)

This pack of ten Bosch HSS-Co twist drill bits is designed for precise, efficient drilling into tough materials. Made from high-speed steel, the drill bits are ideal for working with alloyed and non-alloyed steel, stainless steel, cast iron, and acid- and heat-resistant materials. Their design guarantees a long service life even under intensive use. The split point allows for precise positioning without the need for pre-punching, ensuring accuracy with every project.

Durability and precision in every detail

The drill bits are made of ground high-speed steel (HSS), which gives them an outstanding surface finish and protects them from the effects of high temperatures. The 5% cobalt alloy significantly increases wear resistance and extends tool life, especially when drilling into stainless steel. The tip geometry with a 135-degree angle and a split point ensures active cutting and perfect centring without wandering across the surface. Two spiral flutes take care of smooth and rapid swarf removal from the drilled hole.