Milwaukee step drill bit with Jam-Free performance features a dual-flute design delivering up to 2X faster hole times, up to 4X longer life, and up to 50% more holes per battery charge than competitors. Ideal for drilling small and large-diameter holes in steel and plastic, these bits are optimized for cordless drills at high speed. The Rapid Strike tip allows for a fast and accurate start that generates less heat, resulting in a longer bit tip life. Black oxide coating also enhances durability, hole quality, and bit life. For user convenience and accuracy, each bit has laser-engraved reference marks you can see while drilling. The 3-flat Secure-Grip shank ensures a solid connection with the drill chuck. The #12-step drill bit has 5 hole sizes in 1/8 in. increments ranging from 7/8 in. to 1-3/8 in. Jam-Free performance at high speed with most professional 18-volt cordless drills with lithium-ion battery technology.Find the STEP DRLBIT #12 at Ace.