Bosch CO4142 15/64″ Cobalt Sp Jobber Drill Bit (Bulk)

Engineered for precision and durability, this 12-piece cobalt drill bit set offers robust performance across a variety of applications, making it an essential addition to any toolkit. With a 15/64-inch diameter and a jobber length design, these bits are well-suited for drilling into tough materials such as high-carbon steel, aluminum, stainless steel, and even titanium. The surface-hardened construction allows them to effortlessly penetrate abrasive surfaces while withstanding temperatures up to 1,100°F, ensuring they remain reliable even in high-heat conditions.