Revolutionary tip design stays sharper longer and drills up to 10x faster than other leading drill bitsThree-flatted shank design provides better chuck grip and reduces slippage. Ideal for use in keyless chucksBit is constructed of M-2 high speed steel for the best combination of strength, heat resistance, and wear resistance3/8" reduced shank fits all 3/8" drills Size: 1/2" Twist Length: 4-1/2" Overall Length: 6"