Bosch PRO Metal HSS-G Spiral Drill Bit 8x75x117 mm, 5-Piece Set

The Bosch PRO Metal HSS-G spiral drill bit set is a high-quality solution for precise drilling in metal. These bits are manufactured from high-speed steel and are precision-ground to ensure consistent performance and durability. With a diameter of 8 mm, they are engineered to provide clean, accurate holes in various metal surfaces, making them an essential addition to any professional or home workshop toolkit.

Advantages

The primary benefit of these drill bits is their precision-ground construction, which allows for faster drilling speeds and reduced friction during operation. The high-speed steel material provides excellent heat resistance and structural integrity, ensuring that the bits maintain their sharpness even after repeated use in demanding metalworking applications. This set offers reliable performance and long service life, helping users achieve professional-grade results with ease.

Suitable for

• Drilling in alloyed and non-alloyed steel
• Working with cast iron and cast steel
• General metalworking and fabrication tasks
• DIY home improvement projects involving metal

This drill bit set may not be suitable for drilling into hardened steel, masonry, concrete, or wood, as the geometry and material properties are specifically optimized for metal applications. Using these bits on inappropriate materials may lead to premature wear or damage to the cutting edges.

Key specifications

• Diameter: 8 mm
• Working length: 75 mm
• Total length: 117 mm
• Material: High-speed steel (HSS-G)
• Quantity: 5-piece set

How to use

To achieve the best results, secure your workpiece firmly to prevent vibration or movement during the drilling process. Use a suitable power drill and apply steady, moderate pressure while maintaining a consistent speed. It is recommended to use a cutting oil or lubricant to reduce heat buildup and extend the life of the drill bit, especially when working with tougher metals. Always ensure the drill bit is properly seated in the chuck before starting.

What to consider before purchase

• Verify the chuck capacity of your drill to ensure it accommodates an 8 mm shank.
• Ensure the material you intend to drill is compatible with HSS-G bits.
• Consider the required drilling depth to ensure the 75 mm working length is sufficient for your project.

Usage recommendations: Always wear appropriate eye protection when drilling metal to prevent injury from flying chips. Periodically clear metal shavings from the hole to maintain drilling efficiency and prevent overheating.