Surgical tools intended for use with robotic system include a shaft having a distal effector end and a proximal attachment end. A flexible cable having a distal effector end and a proximal attachment end is slidably received in the central passage of the shaft, and a flexible cable wire assembly includes a pull/push wire having a distal effector end and a proximal attachment end slidably received in a lumen of the pull/push cable. An end effector is operably attached to the distal effector ends of the flexible cable and the distal effector end of the pull/push wire, and the end effector is disposed distally beyond the distal effector end of the shaft and is actuated by axially translating the pull/push wire relative to the flexible cable in the flexible cable wire assembly.