Bosch CO4138 11/64″ Cobalt Sp Jobber Drill Bit (Bulk)

Engineered for maximum durability and efficiency, this set of cobalt drill bits is designed to excel in high-temperature applications, enduring conditions up to 1,100°F. Comprising twelve 11/64-inch bits of jobber length with a full shank, they are ideal for penetrating a variety of tough materials, including light-gauge metal, cast iron, and even more challenging substances like stainless steel and titanium. The surface-hardened design enhances penetration, while the rigid, thick web construction provides added stability during intense drilling tasks. Whether you’re a professional tradesperson or a dedicated DIY enthusiast, these drill bits are crafted to meet the demands of rigorous projects while delivering reliable performance.