Handy Flux is a general purpose flux that works especially well on Silver. It is a special, paste formula designed to work in temperatures up to 1600*. Handy Flux also works great on Gold and Copper, and cleans up easily with water. Includes applicator brush. Size: 7 fluid ouncesHandy Flux is a general purpose flux that works especially well on Silver. It is a special, paste formula designed to work in temperatures up to 1600*. Handy Flux also works great on Gold and Copper, and cleans up easily with water. Includes applicator brush.Size: 7 fluid ounces