No mess, no waste, 7.1 gram syringe. * Works with the heat of a match or lighter. * Works on ferrous and non-ferrous metals. * Five times stronger than conventional solders. Offers tensile strength of 10,000-28,000 psi. * Flows freely and smoothly between 395-430 degrees Farenheit. Remelts at 500 degrees Farenheit.