Milwaukee THUNDERBOLT™ 3/8" Black Oxide Drill Bit features a thick core web that provides superior protection against side-load breakage, ensuring durability and long-lasting performance. Its corrosion-resistant black oxide coating enhances lubricity and extends the bit's life, making it i for tough jobs. The parabolic flute design efficiently clears 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 hole starts every time. It requires less effort when drilling through metal, wood, and PVC, and performs effectively on curved surfaces. This versatile bit is for use with portable drills, making it a reliable choice for both professionals and DIY enthusiasts. Model Number: 48-89-2730