Milwaukee THUNDERBOLT™ 15/64" Black Oxide Drill Bit features a thick core web that provides protection against side-load breakage, ensuring durability and long-lasting performance. Its corrosion-resistant black oxide coating adds extra lubricity and helps extend the life of the bit. The parabolic flute design efficiently clears away chips and debris while keeping the bit cool during use. Equipped with a 135° split point tip, this drill bit prevents walking and delivers precise holes and accurate starts every time. It requires less effort when drilling through metal, wood, and PVC, and performs well on curved surfaces. This drill bit is i for use with portable drills, making it a versatile and reliable choice for various drilling applications. Model Number: 48-89-2721