Drill bit set Alpen-Maykestag HSS-Cobalt 5-piece (model 63300005100)

The Alpen-Maykestag HSS-Cobalt 5-piece drill bit set is a collection of high-speed steel cobalt alloy bits engineered for drilling harder materials where elevated heat resistance and wear resistance are required. Each bit in the set is ground for accurate centring and steady chip evacuation, enabling consistent hole quality in demanding workshop and professional environments. The set is compact and intended for tasks that require longer tool life than standard HSS bits provide.

Advantages

Bits made from HSS-cobalt alloy provide improved red hardness and abrasion resistance compared with conventional high-speed steel, allowing higher cutting speeds and prolonged service life when working with tough materials. The precision ground flute geometry reduces vibration and improves chip removal, supporting cleaner holes and fewer re-drills. The set covers common diameters used in metalworking and maintenance, providing a practical range for many repair and fabrication tasks.

Suitable for

• Drilling stainless steel and hardened steels
• Fabrication and metalworking in workshops
• Maintenance, repair and overhaul (MRO) tasks
• Drilling into cast iron and other abrasive metal alloys
• Use with handheld drills and drill presses

Key specifications

• Material: high-speed steel with cobalt alloy for increased heat resistance
• Number of pieces: 5
• Suitable for drilling in harder metals and abrasive alloys
• Flute design: precision ground for improved chip evacuation
• Finish: ground cutting lips for accurate centring and hole quality

How to use

Select the appropriate drill bit diameter for the hole required and secure the workpiece to prevent movement. Use a suitable drill chuck and ensure the bit is correctly centred and tightened. Start drilling at a moderate speed, increasing RPM as material and coolant allow; use cutting fluid or coolant when drilling stainless steel or other heat-sensitive alloys to extend bit life. Apply steady, even feed pressure and clear chips frequently where possible. After use, clean and store the bits in their case to prevent corrosion and maintain cutting performance.

Usage recommendations

For optimal performance, use cutting fluid when drilling stainless steel or heat-prone alloys, and reduce speed when entering hardened sections. Inspect drill bits regularly for wear or chipping and replace when cutting performance degrades to avoid oversized holes or increased load on the drill motor.