The Killer Tools Aluminum Stud Welder, No. ART401F, is designed to meet Ford requirements. The system uses a powerful digital capacitor discharge stud welder. With dual inline ground handle and 12' cables to reach most roof repairs. The system comes with 4mm and 6mm aluminum studs, 4mm and 6mm stud pulling eye-nuts, 4mm and 6mm electrodes, t-handle pulling hook, lever puller, non-contact digital thermometer, and heat gun. Also comes with a five year limited warranty.