About this item For use on all domestic and imported vehicles with oxygen sensors. A slot provided in the side of the socket allows wire clearance. Outside rib provides added strength, yet does not restrict access to sensors. 1/2" square drive, 1" male hex drive on top, 7/8" six-point opening, 3 7/8" long. Universal oxygen sensor wrench. Wt., 1 lb. › See more product details