Handles up to 5 tons of knuckle twisting force. Jaw reach is 3" with a spread of 3". Jaws, once tightened, won't slip on the knuckle. Can be used to separate lower ball joints on import FWD vehicles This tool is a must when you're servicing outer tie rods. It works on imported and domestic models, front or rear wheel drive, cast or stamped-steel steering knuckles.