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 4 in long and holes up to 3/8 in Dia. Repair will be complete when the resin cures in 30 min. Tank may be refilled after 30 min or when the repair is tack-free. The repair resin is designed to harden within 8 to 10 min and cures in 30 min. Repairs can be made ideally at temperatures from 50 to 75 deg F. Repairs made at lower temperatures will take longer to cure. Repairs can be made on slow leaking cracks up to 4 in in length and holes up to 3/8 in in Dia.