Milwaukee THUNDERBOLT™ 13/64" Black Oxide Drill Bit is designed with a thick core web that provides protection against side-load breakage, making it a durable choice for your drilling needs. Its corrosion-resistant black oxide coating enhances both lubricity and durability, ensuring longer tool life. The parabolic flute form efficiently clears chips and debris while keeping the bit cool during use. Featuring a 135° split point tip, this drill bit prevents walking and delivers precise holes and accurate starts. It requires less effort when drilling through metal, wood, and PVC, and performs effectively on curved surfaces. I for use with portable drills, this bit combines strength and precision for a wide range of applications. Model Number: 48-89-2719