Features: 1. Removes wiper arms on many foreign and domestic cars and light trucks quickly, easily and safely. 2. Avoid damage to wiper arm or hood cowling during removal. 3. Suitable for straight and splined spigots up to 15mm diameter. 4. Simply place puller feet under wiper arm and tighten forcing screw against wiper shaft. 5. Corrosion resistant chrome plating for long life use. 6. Collar size: 15.2mm / 0.59' 7. Internal height: 27.2mm / 1.06'