cordless screwdriver

Battery-driven screwdriver with interchangeable bits, used for tightening and loosening screws and bolts.

tip

End of the blade or bit that fits into the groove of the screw or bolt.

reversing switch

Switch for selecting the bit’s direction of rotation (screwing or unscrewing).

bit

Detachable shank rotated by the motor to screw or unscrew a part.

battery

Device that stores chemical energy while charging, then converts it to electric energy.

handle