Milwaukee 21/64 in. Thunderbolt Jobber Drill Bit

Milwaukee Thunderbolt black oxide jobber length drill bits are designed for extreme durability and long life. The thicker core design provides ultimate strength and helps protect against side-load breakage, making them reliable for demanding drilling tasks. Featuring a parabolic flute form to clear chips quickly and a 3-flat Secure-Grip shank to reduce slipping in the drill chuck, these bits deliver efficient performance. The 135-degree split point tip prevents walking on contact, making them effective for drilling through metal, wood, and PVC.