The Cobalt Blacksmith Drill Bit with a 1/2" (12.7mm) reduced shank is purpose-built for heavy-duty applications requiring strength, heat resistance, and precision. With an overall length of 150mm and a flute length of 78mm, it offers excellent chip clearance and deeper drilling capabilities. Manufactured to DIN 338 standard, this drill bit is made from high-grade cobalt alloy steel, offering exceptional durability and performance in high-temperature drilling environments. Suitable for Drilling Into: Stainless steel (including austenitic grades), Chrome-nickel (Cr-Ni) alloys, Acid-resistant steels, High-tensile steels, Heat-resistant steels, Cast iron, Hardened or work-hardened steel, Tool steel, Manganese steel, Titanium and titanium alloys, Bronze (especially high-strength grades), Nickel-based alloys (e.g., Inconel, Monel), and Other difficult-to-machine ferrous and non-ferrous metals. Perfect for machinists, mechanics, metalworkers, and hobbyists who need to cut or repair threads with confidence and accuracy. Engineered to meet the demands of professionals and DIY enthusiasts alike, this drill bits set is designed to provide exceptional performance and versatility in various drilling operations applications. Crafted from premium HSS cobalt material, these small drill bits offer superior hardness and heat resistance, making them ideal for drilling tough materials such as stainless steel, cast iron, and hardened alloys. Experience consistent performance and extended tool life, even in the most demanding tasks. Each cobalt drill in our drill bits set has a precision-ground, 135-degree split point tip (only applicable to sizes 3mm and above). This design ensures quick and accurate drilling without the need for pre-punching, saving your time and effort. Say goodbye to wandering cobalt drill bits and hello to clean, precise holes. Our HSS cobalt drill bits enable higher cutting speeds and improved chip evacuation, resulting in faster and more efficient drilling. Experience increased productivity and reduced downtime with this high-performance drill bit set. Our drill bits for stainless steel offer a comprehensive range of options for your drilling needs. From metalworking projects to DIY tasks, these pillar / electric/ cordless / hand drill bits are suitable for a variety of materials, including metal, plastic, wood, and composites. Enjoy the versatility to tackle different projects with confidence. Invest in the Rennie Tool Company pack of 10 cobalt drill bits for metal and elevate your drilling capabilities. With premium construction, precision drilling, enhanced performance, and versatile applications, this set is an essential addition to any tool box. Take your projects to the next level with these reliable and durable steel drill bits for hard steel.