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DRILL BITS *Sub Brand: THUNDERBOLT *Diameter: 9/16 in. *Overall Length: 6 in. *Material: Black Oxide *Product Type: Drill Bit *Number in Package: 1 pc. *Shank Type: 3-Flat Shank *Usage: Aluminum, duct/sheet metal, PVC, steel and wood *Shank Diameter: 1/2 in. *Finish: Black Oxide *Packaging Type: Carded *Flute Length: 3 inch *Design: Silver & Deming *135-deg. split point tip starts on contact to prevent walking *Parabolic flute clears chips fast * 3-Flat Secure-Grip shank holds the bit firmly in the drill chuck for reduced slipping * Black oxide coating provides lubricity and resists corrosion* Reduced shank diameter for use in 1/2 in. chucks *Discovery ACC, CON, NBR, SUP, EXP