Milwaukee #8 Step Drill Bit, 1/2 In.-1 In. delivers exceptional jam- performance with a dual-flute design that provides up to twice as fast hole drilling, up to four times longer life, and up to 50% more holes per battery charge d to competitors. This versatile bit is for drilling both small and large-diameter holes in steel and plastic, optimized specifically for high-speed cordless drills. Featuring the Rapid Strike™ tip, it ensures a fast and accurate start while generating less heat for extended bit tip life. Its black oxide coating enhances durability, improves hole quality, and prolongs bit life. For added convenience and precision, laser-engraved reference marks are visible during drilling. The 3-flat Secure-Grip™ shank s a solid connection with the drill chuck. The #8 step drill bit includes nine hole sizes in 1/16-inch increments, ranging from 1/2 inch to 1 inch, and is designed for use with professional 18 Volt cordless drills with lithium-ion battery technology. Model Number: 48-89-9208