Professional 10mm Cobalt High-Speed Steel Drill Bits – Heavy-Duty Metal Drilling Set of 10

Crafted for precision and endurance, this professional 10mm Cobalt High-Speed Steel Drill Bit Set delivers exceptional performance in demanding metal drilling applications. Engineered from premium-grade HSS with a cobalt alloy blend, these bits provide superior heat resistance and longer service life, even under continuous heavy use. They are specifically designed for cutting through tough materials such as stainless steel, cast iron, titanium, and alloyed metals with remarkable accuracy and efficiency.

Each bit measures 133mm in total length, with an 87mm usable drilling depth, offering an optimal balance between reach and stability. The sharp, split-point tip ensures fast starts with minimal walking, allowing clean and precise holes every time. This design reduces friction, improves chip removal, and prevents overheating, making it ideal for both professional workshops and industrial settings.

The cobalt-enriched HSS material increases hardness and durability, maintaining sharpness far longer than standard drill bits. These bits perform reliably at high speeds, handling repetitive drilling tasks without losing edge quality. Their consistent cutting performance helps reduce downtime and tool changes, enhancing productivity across a variety of projects.

Packed conveniently in a durable plastic case, the set includes 10 identical 10mm drill bits—perfect for technicians, machinists, and metal fabricators who need dependable replacements ready at hand. The case protects the bits from damage and ensures easy organization and transport between job sites.

Whether you’re fabricating steel structures, drilling engine components, or working on precision machinery, these cobalt HSS drill bits deliver the power and precision you can trust. They are compatible with all standard power drills and drill presses, making them versatile additions to any toolkit.

Key Features:

• Diameter: 10mm
• Total Length: 133mm
• Usable Length: 87mm
• Material: Cobalt High-Speed Steel (HSS-Co)
• Quantity: 10 pieces per set
• Excellent heat and wear resistance
• Optimized for drilling stainless steel, cast iron, and alloys