Bosch PRO Metal HSS-G kierrepora 10 x 87 x 133 mm

In a busy metalworking shop, a machinist reaches for this Bosch PRO Metal HSS-G twist drill bit to bore clean, precise 10 mm holes in a steel bracket. The bit’s split point bites instantly without wandering, and the sharp ground flutes eject chips efficiently, keeping the cut cool and accurate. From maintenance crews repairing cast iron housings to fabricators drilling stainless steel frames, this bit delivers reliable performance in demanding metal applications.

Key specifications

• Diameter: 10 mm
• Working length: 87 mm
• Total length: 133 mm
• Material: High-speed steel (HSS), ground finish (HSS-G)
• Point angle: 135° split point for self-centering
• Shank: Cylindrical, 10 mm diameter
• Manufacturing standard: DIN 338
• Packaging quantity: 1 piece

Why choose it

Bosch’s PRO Metal line is engineered for professionals who demand precision and durability. The HSS-G grinding process produces sharp, dimensionally accurate cutting edges that reduce friction and heat buildup. The 135° split point eliminates the need for center punching, speeding up work and improving hole quality. Suitable for a wide range of metals including alloyed and unalloyed steel, cast steel, cast iron, sintered iron, and non-ferrous metals, as well as hard plastics.

Ideal use cases

• Drilling steel and iron components in metal fabrication
• Maintenance and repair of machinery and equipment
• Creating holes in non-ferrous metals like aluminum and copper
• Working with hard plastics in industrial settings
• Use with corded or cordless drills and drill drivers

Good to know

This drill bit is a single piece, individually packaged for convenience. It is compatible with standard three-jaw chucks and quick-change systems. For best results, use appropriate cutting fluid and recommended speeds for the material. The bright finish provides corrosion resistance during storage. Bosch quality ensures consistent performance and long tool life.