Excellent tool for removing old rounded-off, acid eaten, and corroded car battery terminal nuts. These things really bite in past the corrosion layer and into the bare steel, gripping hard and allowing removal of easily rounded-off hardware. Also great for turning any other stubborn small diameter nuts, bolts, or round stock. I would however recommend using the appropriate sized wrench when installing brand new hardware or fittings. These things will leave very evident bite marks. An indspensible tool to own!!
By Kevin from Colorado