Features: Experience superior drilling performances with our Cobalt Twist Drill Bit Set, featuring 13pieces designed for high temperature resistance and great durability when working with hard metals. Crafted from a blend of high speed steel and cobalt alloy, this set ensures extended lifespans and precise cutting, minimizing burrs and enhancing efficiency. Ideal for professional woodworkers, metal fabricators, DIY enthusiasts, and home repair specialists seeking reliable and multipurpose tools. Perfect for tasks such as drilling into stainless steel, cast iron, and so on, whether home renovations, furniture crafting, or routine equipment maintenance in workshops. Conveniently stored in a robusts iron case, this drill bit set is easy to transport and organize, preventing loss and ensuring readiness for any project. Specifications: Component: Cobalt-iron stainless steel Color: As pictures shown. Size: As pictures shown. Specification: 1.5mm/2.0mm/2.5mm/3.0mm/3.2mm/3.5mm/4.0mm/4.5mm/4.5mm/4.8mm/5.0mm/5.5mm/6.0mm/6.5mm Quantity: 1 set Package Includes: 1 set(13pcs) M35 Cobalt Drill Bit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.