Bosch CO4158 31/64″ Cobalt Spjobber Drill Bit (Bulk)

Crafted for precision and durability, this cobalt drill bit set from Bosch includes 12 high-performance bits, each measuring 31/64 in. in diameter and 5-7/8 in. in length. These jobber-length bits are ideal for drilling through a variety of materials, including light-gauge metal, high-carbon steel, aluminum, and even the toughest surfaces like stainless steel and titanium. Engineered to withstand high temperatures of up to 1,100°F, their surface-hardened construction ensures effective penetration into abrasive materials while maintaining stability due to the thick web design. Suitable for a range of demanding applications, this set provides the reliability and performance needed for both professional and DIY projects.