Milwaukee 5/16" Aircraft Length Black Oxide 3-Flat Drill Bit is designed for deep drilling tasks in metal, wood, and PVC plastic. Its black oxide coating excellent resistance to corrosion, ensuring durability and long-lasting performance. The 135° split point tip allows for quick starts upon contact and prevents walking, making drilling more precise and efficient. The 3-Flat Secure-Grip™ shank provides a firm hold in the drill chuck, enhancing stability during use. This drill bit combines reliability and performance for professional and DIY projects alike. Model Number: 48-89-2773