Abstract: An adapter for and in combination with a plier-type toggle locking wrench having an elongated handle with a fixed gripping jaw at one end, an opposing gripping jaw pivotally mounted on the handle, a resilient device urging the pivoted jaw away from the fixed jaw and a toggle mechanism for moving the pivoted jaw toward the fixed jaw, the toggle mechanism including a stub lever variably positioned by a coacting screw operator to effect fine adjustment of the jaws with respect to, and for over-center locking thereof on, the work, the screw operator being threaded into the free end of the handle opposite the fixed jaw, the adapter comprising a replacement screw operator having an externally-threaded portion to be received in the handle and a head portion having an internally-threaded passage adapted to receive a threaded stem of an accessory attachment such as a lifting eyebolt or a impact tool device.