Features:- Heavy Duty Full sized tool – Top quality, designed for professional use – A perfect tool to remove stuck on wiper arm or battery terminal – Tighten knurled cone to force jaws under the cable clamp – Turn center screw to lift clamp off terminal – Also removes bolted-on windshield wiper arms that fit over a tapered spline – The puller screw pad is designed to fit the top of the spline post for easy pulling In.