Bosch CO4147 5/16″ Cobalt Sp Jobber Drill Bit (Bulk)

Crafted by Bosch, this set of cobalt drill bits is designed to excel in challenging drilling tasks. With a jobber length and a 5/16-inch diameter, these bits are particularly effective for penetrating a variety of materials, including light-gauge metal, high-carbon steel, aluminum, cast iron, stainless steel, and titanium. The rigid, thick web construction enhances stability during use, while the ability to withstand temperatures of up to 1,100°F ensures durability in high-heat applications.