IRWIN Cobalt Drill Bit Set 25 Pieces 1.0-13.0 mm

The IRWIN Cobalt Drill Bit Set consists of 25 high-performance drill bits designed for precision and durability in demanding metalworking environments. Ranging from 1.0 mm to 13.0 mm in 0.5 mm increments, this comprehensive set provides the versatility needed for a wide array of drilling tasks. Each bit is crafted from a cobalt alloy, which significantly enhances heat resistance and structural integrity when working with abrasive or hardened materials.

Advantages

These cobalt drill bits offer exceptional performance due to their high-temperature resistance, which prevents the material from softening during prolonged use. The cobalt composition ensures that the cutting edges remain sharp for longer periods, even when drilling through tough alloys like stainless steel. By maintaining structural stability under high friction, these bits reduce the risk of breakage and ensure consistent hole quality across various industrial applications.

Suitable for

• Drilling into stainless steel and high-tensile alloys
• Professional metalworking and fabrication
• Industrial maintenance and repair tasks
• Precision drilling in cast iron and hardened steel

This set may not be the most cost-effective choice for drilling into soft materials like wood or plastic, where standard high-speed steel bits would suffice. Additionally, because cobalt bits are harder and more brittle than standard steel bits, they require careful handling to avoid snapping if the drill is not held perfectly perpendicular to the workpiece.

Key specifications

• Material: Cobalt alloy
• Size range: 1.0 mm to 13.0 mm
• Increment: 0.5 mm
• Quantity: 25 pieces
• Application: Hard metals and stainless steel

To use these drill bits, select the appropriate size for your project and secure it firmly into your drill chuck. Ensure the workpiece is clamped down securely to prevent movement. Start the drilling process at a lower speed to create a pilot mark, then gradually increase the speed while applying steady, consistent pressure. Using a cutting lubricant is highly recommended to extend the life of the bits and improve the finish of the hole.

What to consider before purchase

• Compatibility with your existing drill chuck size
• The hardness of the material you intend to drill
• Requirement for cutting fluid to maintain bit longevity

Usage recommendations: Always wear appropriate eye protection when drilling metal. To maximize the lifespan of your cobalt bits, use a slow drilling speed and apply a high-quality cutting oil to reduce heat buildup and friction during the operation.