Handy Flux is a very durable and powerful general purpose flux that protects your parts up to 1,600 degrees Fahrenheit (870 degrees Celsius). It is an active fluoride-type flux which is appropriate for all nonferrous metals and begins to melt and dissolve oxides at 600 degrees Fahrenheit (320 degrees Celsius). Paste formula can be cleaned up with hot water. 1 lb. jar with brush.