Drill through ferrous and non-ferrous metals with the MAXIMUM Cobalt Step Drill Bit Set. Made from 5% cobalt steel for top quality strength and durability, the bits in this set feature 135° split points on 1/8" (3.2 mm) and larger for immediate drilling upon contact. Capable of making a variety of holes, the bits in this step drill bit set have a two flute spiral design for maximum chip removal and longer life.
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