Keyless Cordless Drill/Driver.

Torque Adjusting Ring: The collar with numbers (visible as 17 • 19 • 21 • 23 • 25) changes the torque clutch settings to prevent over-tightening or stripping screws.Forward / Reverse Switch: The small button right above the trigger controls the rotation direction (push left for forward/drilling, push right for reverse/backing out screws).Dual 48V XR Lithium-Ion Batteries: The kit includes two interchangeable slide-on batteries labeled 48V XR Li-Ion for cordless power.