Irwin 73632 Irwin 73632 Turbomax® High Speed Steel Fractional 3/8" Reduced Shank Jobber Length Drill Bit - 1/2" - Carded

736 Series. Revolutionary tip design stays sharper longer and drills up to 10x faster than other leading drill bits. Three-flatted shank design provides better chuck grip and reduces slippage. Ideal for use in keyless chucks. Bit is constructed of M-2 high speed steel for the best combination of strength, heat resistance, and wear resistance. 3/8" reduced shank fits all 3/8" drills grip. Size: 1/2". Decimal Equiv: .5000. Flute Length: 4-1/2". Overall Length: 6".