Eliminates dangerous welding. Complete kit contains everything required for making professional-quality permanent repairs in just minutes. Includes state-of-the-art components and easy-to-follow instructions with photographs to make quick permanent repairs to leaks in all types of metal fuel tanks. It repairs cracks up to 10cm long and holes up to 9mm in diameter. Repair will be complete when the resin cures in 30 minutes. Tank may be refilled after 30 minutes or when the repair is tack free.