Rapid Steel Putty A hand mixable steel reinforced, epoxy putty which mixes in just one minute to provide fast repairs to items made of ferrous and aluminium metals. Applications: Ideal to repair ferrous metals, rebuild small engine parts, fill cracks and voids in metal, seal leaks, form nuts and bolts, repair stripped threads, form anchor machines, repair metal tools, equipment ducts, pipes, housing & appliances, sinks traps and auto bodies. Also bonds to wood , glass masonry and many plastics. Suitable for interior and exterior use