- Size: Working diameter: 4.8 mm; Working length: 43 mm; Shank diameter: 4.8 mm; Total length: 86 mm - Durable Material: Made from high-speed steel with added cobalt, this cobalt drill bit offers exceptional hardness, wear resistance, and thermal stability, making it ideal for demanding cutting applications. - Fast Drilling: The fully ground spiral flute design allows for rapid chip removal, reducing friction and heat while increasing drilling speed. The 135° straight shank with a split point minimizes walking on the work surface, ensuring precise and effortless drilling. - Versatile Applications: This spiral drill bit is perfect for tough materials such as stainless steel, tool steel, alloy steel, cast iron, aluminum alloy, copper, and hard plastics. It is also suitable for softer materials like wood, making it a versatile addition to your toolkit. - Problem Solving: Whether you are working on metal fabrication, woodworking, or construction projects, this drill bit provides the durability and efficiency needed to tackle a variety of tasks with ease. - Compatibility: Ideal for both professional and DIY use, the drill bit fits standard drilling equipment and is designed to perform well under high-stress conditions. Choose this cobalt drill bit for reliability and superior performance in all your drilling needs.