Outstanding durability in stainless steel! High-speed steel with additional cobalt material for long-lasting performance. Are you looking for drill bits that can make clean cuts in stainless steel? Bits that work quickly, deliver precise results, and do not wear out quickly? PRO Stainless Steel HSS-Co spiral drill bits are stable and do not wander, allowing you to drill clean and precise holes, time and time again. PRO Stainless Steel HSS-Co drill bits are a great choice for construction workers and installers who need durable bits for drilling in stainless steel and other metals. They are made from high-quality, cobalt-reinforced high-speed steel (HSS-Co) and are ground to ensure high wear and heat resistance. They feature a centering tip, so holes can be placed exactly where they need to be. This allows you to work faster and benefit from the drill's performance for a long time.