A housing holding a stator has increased rigidity. A vibration driver drill includes a motor including a stator and a rotor rotatable relative to the stator, a gear case in front of the motor, a gear in the gear case to receive rotation of the rotor, an output shaft protruding frontward from the gear case to receive rotation from the gear, an integral cylindrical housing accommodating the motor and including a front portion with an opening and a rear portion closed, a gear case housing connected to the front portion of the integral cylindrical housing and including a right part and a left part and holding the gear case, and a grip housing extending downward from the gear case housing.