Strong Steel Stick is a convenient, easy-to-use, hand-kneadable stick for immediate repair to steel equipment and surfaces. Ideal for stopping leaks and even works on underwater applications. In addition, it permanently fills gaps and holes in metal, concrete, wood, fiberglass and ceramics. Strong Steel Stick will harden in 30 minutes and will fully cure in 1 hour to form a durable mass that can be machined, drilled and painted. Strong Steel Stick can be used to repair plumbing, vehicle and equipment machinery.