Cobalt Drill Bit Set for Hard Metal, Stainless Steel, and Cast Iron - 10 Pieces

The high-precision drill bits featured here are meticulously manufactured in strict accordance with ANSI B94-11M standards. Fine grinding flutes ensure exceptional hole accuracy, making these tools a reliable choice for your drilling needs.

The key to the superior performance of these drill bits lies in the material composition. Containing a 5% cobalt alloy, the drill bits exhibit remarkable hardness and wear resistance, making them perfectly suitable for drilling into hard metals such as stainless steel and cast iron. This enhanced hardness not only extends the lifespan of the drill bits but also ensures consistent, high-quality results even when tackling the toughest materials.

The innovative 135-degree split point design of these drill bits further contributes to their exceptional performance. This design feature improves cutting speed while facilitating easy self-centering, effectively preventing the drill bit from walking or skating across the workpiece surface. This enhanced stability and precision during the drilling process ensures clean, accurate holes every time.

When using these drill bits, it is important to ensure that both the drill and the workpiece are securely in place before commencing the operation. For drilling thick metal, the use of a drill press is strongly recommended. To avoid breaking the drill bit, it is crucial to keep the bit perpendicular to the workpiece throughout the drilling process.

To optimize the drilling experience, it is advised to start at the lowest RPM when working with metal. The friction generated between the drill bit and the workpiece can produce significant heat, making the use of a coolant liquid a necessity during the drilling process. This not only helps to dissipate the heat but also enhances the overall efficiency and longevity of the drill bits.

Manufactured from high-speed steel with a 5% cobalt alloy, these drill bits boast exceptional wear and heat resistance, resulting in a prolonged lifespan. The meticulous grinding process used in their production ensures a smoother surface, reducing friction and further improving the cutting speed.

For your convenience, this set includes 10 pieces of 5/32-inch cobalt drill bits, neatly packaged in a durable plastic case for easy storage and portability. With their unwavering precision, exceptional hardness, and user-friendly features, these drill bits are the ideal choice for tackling a wide range of drilling tasks, from working with hard metals to softer materials.

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