Milwaukee THUNDERBOLT™ 5/16" Black Oxide Drill Bit features a thick core web that provides protection against side-load breakage, ensuring durability and reliability during use. Its corrosion-resistant coating enhances lubricity and extends the life of the bit. The parabolic flute design efficiently clears chips and debris while keeping the bit cool, improving performance and longevity. Equipped with 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, making it highly effective even on curved surfaces. This bit is i for use with a portable drill, ing versatility and ease of use for various drilling tasks. Model Number: 48-89-2726