SN431BS SN431BS-HF SN431CS SN4363108 Sn43Pb57 0.6mm 1000G Sn43Pb57 0.6mm 100G Sn43Pb57 0.6mm 250G Sn43Pb57 0.6mm 500G Sn43Pb57 0.6mm 700G Sn43Pb57 0.8mm 1000G