Irwin 73328 Turbomax High Speed Steel Fractional Straight Shank Jobber Length Drill Bit - 7/16" – Carded Standard Features: 733 Series High performance metal drilling for portable drill users, works well on curved surfaces Revolutionary tip design stays sharper longer and drills up to 10x faster than other leading drill bits High speed steel features a black body and gold flute Self-centering Turbomax tip for clean entry and fast starts; stays sharp longer 3-flatted shank on 3/16" and above for better chuck grip Size: 7/16" Decimal Equiv: .4375 Flute Length: 34-1/16" Overall Length: 5-1/2" UPC: 0 24721 73328 3 Wt.: 0.2 lbs Package Quantity: 1 Each/Card Case Quantity: 3 Packs/Case Sold as Each. Price given per Each. WARNING: Always read and follow the operating and safety instructions in the power tool owner's manual and the instructions for use of the accessory. Always wear safety goggles to protect your eyes, and wear other appropriate safety items for protection. Do not drill near live electrical circuits. Do not use excessive force while drilling. Do not use a side-to-side movement when drilling. Adjust the drilling speed to the job; generally the harder the material being drilled the slower the RPMs.