Abstract: A wrench allows the user to apply sequential strokes to a rotatable element such as an hexagonal nut or bolt without removing the wrench from the element.sub.--. The wrench has a head with two jaws adapted to engage the rotatable element. A spring-mounted, retractable jaw member is linearly slidable within a slot in one of the jaws and biased toward the base of the wrench head. The retractable jaw member also has an exposed engaging surface on one side. The opposing jaw has another fixed engaging surface extending substantially parallel to the engaging surface on the retractable jaw member. The two engaging surfaces cooperate to grip a rotatable element and apply torque to the element to rotate it in one direction. On the return stroke, a relatively small amount of resistance from the rotatable element forces the retractable jaw member inward into its slot, allowing the wrench to rotate back around the element without turning it in the reverse direction.