the thickness of the thin bidirectional ratchet wrench of the present disclosure is preferably less than or equal to 30 . 0 mm , it can be used in narrow spaces easily , achieves two working modes , and can convert between them conveniently and stably . during use of the thin bidirectional ratchet wrench of the present disclosure , the input torque that the operator exerts is a clockwise torque or a counterclockwise torque , the output torque of the output end of the thin bidirectional ratchet wrench of the present disclosure is a clockwise torque or a counterclockwise torque , alternatively .