60/40 Tin/Lead rosin core solder for electronic circuit useSpool-mounted2.0% Flux contentFlux Type: MC20A1mm (0.039″) diameterThis 1-pound spool is useful for extensive soldering jobs, or just to ensure that you don’t run out at an inopportune time.MC-20A isa no-clean, rosin-based solderfor high-temperature application. It will not lose its strong wetting and low splash properties during use. Suitable temperature range is 572-752F (300-400C)This solder contains lead.Thermoflow60/40 Sn/Pb Rosin Core Solder