Reliable electrical solder that"s better for the environment - lead-free * Activated rosin core solder for electrical/electronic work; non-corrosive and non-conductive * 1.0mm-diamter, popular choice for appliances, automotive/marine, electronic gear, computer/circuits * Hard acrylic tube protects solder in tool box, dispense-as-you-use top prevents waste * 7.5" wound-coil length, 97.3% tin, .07% copper, 2.0% rosin flux core, 12g wt; melting point 430F