HIGH SPEED STEEL STEP DRILLS
For cutting in ferrous & non-ferrous metals, -plastics and wood up to 1/8" thickDouble flute design reduces chatter and -deburrs holesHigh speed steel with zirconium coating to -reduce wear for longer tool lifeEach step is 1/8" depth27200 has 1/4" shank - others have 3/8" shank8 Steps