FeatureGood wettability， conductivity， thermal conductivity， easy to climb on the tin.Uniform flux distribution， no broken flux core from tin.No knot in winding， climb tin with good speed and few residues.Good for electric and technology.Specification Color:silverDiameter:0.6mmWeight:About 50gMaterial:tin60sn 40pb Flux:1.2%Package include1Xsolder wire.