Bosch HSS-G Metal Drill Bits, Long Series, 4.5mm (Pack of 5)

The Bosch HSS-G Metal Drill Bits are precision-engineered for drilling through metal with exceptional accuracy and efficiency. Made from high-speed steel (HSS), these bits offer superior durability and performance, ideal for both alloyed and non-alloyed metals, cast iron, and hard plastics.

Key features include a 135-degree self-centering split-point tip, which ensures active cutting and perfect centring without wandering. This eliminates the need for pre-punching or pilot drilling up to 10mm diameters, saving you time and effort. The precision-ground HSS construction allows for up to 40% faster drilling speeds and 50% lower feed pressure compared to standard HSS bits, making your work quicker and easier.

Designed for use in drill stands and drill drivers, these bits have a cylindrical shank system (shank diameter equals drill bit diameter) and comply with DIN 338 standards. The Type N flute angle and h8 diameter tolerance ensure consistent and reliable performance.

Features:

• Precision-ground from high-speed steel (HSS)
• Self-centering split-point tip (135°) for accurate drilling
• No pre-punching or pilot drilling required (up to 10mm)
• Up to 40% faster drilling speed than standard bits
• Reduced feed pressure for smoother operation
• Suitable for alloyed/non-alloyed steels, cast iron, and hard plastics

Specifications:

• Pack of 5 drill bits
• Diameter: 4.5mm
• Total length: 126mm
• Working length: 82mm
• Shank type: Cylindrical (equal to drill bit diameter)

Perfect for professionals and DIY enthusiasts, these Bosch drill bits are built to handle tough materials while maintaining precision and longevity.