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Step Drill 9 Step No. 3 - 0.25 x 0.75 in & Shank 0.375 in.
Step drill bits high speed steel. Century step drills are for cutting in ferrous and non-ferrous metals, plastics and wood up to 1/8" thick. Double flute design reduces chatter and deburrs holes. Zirconium coating reducers ware for a longer tool life.
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