Milwaukee THUNDERBOLT™ 1/2" 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 toughness, making it i for demanding drilling tasks. The parabolic flute design efficiently clears away chips and debris, keeping the bit cool during use and enhancing drilling speed. The 135° split point tip prevents walking, allowing for precise hole placement and easy starts. This drill bit requires less effort when working through metal, wood, and PVC, and it performs effectively on curved surfaces. It is used with a portable drill for optimal results. Model Number: 48-89-2738