Milwaukee 1/4" x 4" Carbide-Tipped Hammer Drill Bit delivers exceptional durability and performance, providing up to five times more life when drilling into concrete and up to twice as fast drilling into masonry materials. This drill bit features sharpened, precision-ground tips that ensure faster starts and reduce walking during drilling in concrete, brick, and block applications. Its wide flute design effectively removes dust more quickly, which helps reduce heat buildup and allows you to drill more holes per battery charge. This makes it an i choice for professionals seeking efficiency and longevity in demanding drilling tasks. Model Number: 48-20-9001