Built For Long Life - Glass-filled nylon housing provides resistance from damage caused by some oils and solvents. Brighten dark workspaces with onboard LED and brightness control. Secure Bits In Any Angle - Detent pin anvil holds socket bits in place in elevated and angled positions. Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18 volts. Strong Performance - Up to 300 ft-lbs of max fastening torque and 450 ft-lbs of max breakaway torque. Enhanced user control in a variety of applications with 4 speed settings. Optimized speed in wood with timber screw mode. Helps prevent overtightening and fastener run-off with PRECISION WRENCH Control.