Milwaukee step drill bits with jam-free performance feature 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 in high speed. Black oxide coating also enhances durability， hole quality and bit life. For user convenience and accuracy. Jam-free performance in high speed with most professional 18-volt cordless drills with lithium-ion battery technology.
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