What is a high-speed steel drill?
HSS Cobalt Drill Bit's HSS drill bit is wear-resistant and heat-resistant. The high concentration of chromium and nickel in stainless steel ensures that the HSS bit is extremely durable. HSS drill bits can safely drill through hardwoods, certain metals and plastics. They can safely operate at high speeds (RPM) and provide long-lasting performance-as long as they are maintained.

Over time, HSS drill bits can become dull and need to be sharpened, which requires specialized tools that are not always available. If you use HSS bits for long periods of time or at high RPM, you may need to use cutting fluid to keep the bits cool.

What is a cobalt drill?
Cobalt bits are a mixture of steel (or other alloys) and a small amount of cobalt, usually between 5-7%. Cobalt has a melting point of 1495°C and a boiling point of 2927°C, making it very suitable for use at high temperatures. By combining a small amount of cobalt with another alloy, the results are incredible. .

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