The M12 FUEL™ 6mm (1/4") 2-Speed Hex Screwdriver delivers increased productivity in a compact size. This 2-speed screwdriver provides up to 10 times longer motor life, 2 times more power, and 4 times more run time. The POWERSTATE™ brushless motor outperforms its leading competitors with constant power and runs at a lower temperature with no wearable components. The REDLITHIUM™ 2.0 compact battery pack (sold separately) delivers up to 20% more power and 2 times more recharges than standard lithium-ion batteries, as well as best-in-class performance in extreme jobsite conditions. The onboard fuel gauge helps you monitor the charge precisely to reduce downtime. REDLINK PLUS™ intelligence ensures maximum performance and protection against overload, overheating, and over-discharge. The optimized design of the M12 FUEL™ 6mm (1/4") 2-Speed Hex Screwdriver produces higher speed for increased productivity on the jobsite. Its compact size allows for work in tight spaces. The integrated LED light illuminates the work surface in dark locations.