DURABLE MATERIAL: The wiper arm removal tool is made of forged steel, durable, and chrome plated. The larger size of the rotating thrust plate prevents damage to the shaft end. Long application time and high security. Great for cleaning wiper arms that haven't been removed for years. Special Design: The battery terminal puller is designed to handle wiper arms of various thicknesses. If necessary, keep the arms very thin so as not to put too much pressure under the wiper arms. The stock battery terminals can be removed, as can the bolt-on windshield wiper arms mounted on the tapered splines. Soakable: Wiper Arm Puller Repair Tool is a well-made tool that should last a lifetime. The stock rear wiper arm can be removed to reduce unnecessary trouble. It can be presoaked overnight by aeration. Easy to use: Remove the battery terminal pull arm nut, turn it over, and turn it on the spindle a few times to give yourself a larger pressing surface area. If there is a cleaning nozzle, remove it, it is very easy to use. Wide Applicability: The battery terminal puller is a high-quality general-purpose puller for gears, pulleys, and hubs. It can even be used on flywheels with small motors, found in outboard motors and lawn mowers.