Best Automotive Tool: Designed for professionals dual-purpose usage to remove battery terminal clamp without damage to battery post. Great DIY: Can also be used to easily remove the bolted-on windshield wiper arms that fit over a tapered spline. Usage: Removes stuck on wiper arm,tighten knurled cone to force jaws under the cable clamp,turn center screw to lift clamp off the terminal Premium Quality: Forged by durable carbon steel with exquisite appearance, it is sturdy and long lasting. Best automotive tool for professional car repair shops, Auto Mechanics and DIY Best Performance: Our Battery Bearing Terminal Puller has strong structure design with sprung loaded arm which ensures a perfect pull-power to get the job done Features: Battery Terminal and Windscreen Wiper Arm Altrernator Bearing Puller Tool Ideal tool to remove stuck on wiper arms that haven\'t been taken off for years. The heavy duty construction with locking feature allows the tool to be fastened securely to the wiper arm before commencing the pull. The sprung loaded arm ensures a perfect grip, pulling the wiper arm squarely off every time. It can remove bolted-on windshield wiper arms that fit over a tapered spline. Can also be used for removing over tight battery terminals and some alternator bearings. Specifications: Type: Battery TerminalWindscreen Wiper Material: Metal Quantity: 1pc Color: As Shown Item Size: 10*8.5*3.5*1.8cm package include1*Battery Terminal and Wiper Arm Puller