Designed for drilling in stainless steel - Looking for drill bits to help you get clean cuts in stainless steel? Drill bits that work fast, deliver precise results, and won't wear quickly? PRO Stainless Steel HSS-Co Twist Drill Bits are strong and won't wander so that you can drill clean and precise holes – time and again. PRO Stainless Steel HSS-Co bits are a great choice for construction workers and installers who need long-lasting bits to drill in stainless steel and other metals. We made them from premium high-speed steel reinforced with cobalt (HSS-Co) and ground them to ensure great wear and heat resistance. They feature a centring tip so that you can start new holes exactly where you need them. This means you can work faster and enjoy the drill bits' performance for longer. Cylindrical shank compatible with three-jaw drill chucks