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Technical Info for High Speed Steel (HSS) TiN Coated
RUKO high-performance split point step drill bits cut fast, clean holes in up to 0.16 inch (8 ga) material. With CBN-ground flutes for a superior cutting edge and titanium nitride coating for increased surface hardness and heat resistance, these Imperial-size HSS step drill bits are suited for many metals and plastics. Step sizes up to 1-1/8 inch are available.