The #30 Cobalt Jobber Drill by Field Tool Supply is a high-performance drill bit designed for precision drilling in hard materials. Made from premium cobalt steel, it offers exceptional durability and heat resistance. With a diameter of 0.1285 inches, this drill is ideal for applications in metalworking, including stainless steel and other tough alloys. The 135-degree split point design minimizes walking and enhances cutting efficiency, making it perfect for both professional and home use. This drill bit is a reliable addition to any toolkit, ensuring accurate and clean holes.