Annic high speed steel step drill 1/4" to 1-3/8" inches 1/8" Increments, it's made high quality material , sturdy and durable. Double flute design for faster, smoother cutting, 3 flatted 3/8" shank, heat treated HSS with titanium nitride coating, Self-starting - no walking and no center punch required, Perfect for drilling holes in thin materials such as steel, aluminum, stainless steel, copper and more.
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