Drill/Driver has 2 speed gearbox for tough jobs: High gear provides faster rpm for fast drilling, while low gear offers high torque for heavy duty screwdriving applications * The drill/driver"s high performance motor and gearbox delivers up to 440 in-lbs of torque * Drill/driver"s 1/2-Inch single sleeve chuck offers excellent bit retention and durability * Impact driver delivers 1600 in-lbs high-torque output without kickback * With a length of only 6-1/2-Inch, impact driver fits into tight areas not accessible by larger impact drivers and drills