California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. NEW IMPROVED DESIGN; Serrated gripping teeth with spring loaded, self adjusting jaws; Ideal tool for easy adjustment of tie rods & other difficult to access parts; Firmly grips all type of fasteners; 9/16" - 1-1/4" (14 32mm) range for the 1/2" drive