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DRILL BITS *Sub Brand: RED HELIX *Diameter: 15/64 in. *Overall Length: 3-15/16 in. *Material: Cobalt Steel *Style: THUNDERBOLT *Product Type: Drill Bit *Number in Package: 1 pc. *Usage: For Cast Iron and Stainless Steel *Shank Type: 3-FlatShank *Packaging Type: Carded *Finish: Cobalt Coated *Flute Length: 2-7/8 inch *135 degree split point for precision start no walking * Aggressive 35 degrees cutting edge which ends at 15 degrees providing faster material removal *Discovery ACC, CON, NBR, SUP, EXP