The Century Drill Tool 26220 Cobalt is a must-have if you`re a DIY enthusiast or professional carpenter. Based on my observations, i was impressed with its durability and longevity, as it remained sharp after multiple uses .The cobalt coating helped it resist heat and wear, making it ideal for drilling through tough materials such as stainless steel. However, its higher price point compared to other drill bits in the market may be a drawback for some. Overall I highly recommend this cobalt drill bit!