A power tool includes a housing, a motor positioned within the housing, a drive mechanism coupled to the motor and positioned within the housing, and a shear head rotatably mounted to the housing and coupled to the drive mechanism. The power tool also includes a manually-operable actuator supported by the housing. The actuator is movable between a first position, in which the shear head is held stationary relative to the housing, and a second position, in which the shear head is rotatable relative to the housing.