Kester 275 No Clean Flux Core Lead-Free Solder Wire - +700 F Melting Point - 0.031 in Wire Diameter - Sn/Cu/Ni/Bi Compound - 24-9574-7618 [PRICE is per POUND] Sale Unit: POUND Brand: Kester Series: 275 Core Type: No Clean Flux Core Wire Diameter: 0.031 in