This is a new Sterling Silver Medium Wire Solder. Great for general repair & sizing of rings. Hoover & Strong plumb gold solders comply with the Gold and Silver Stamping Act Amendments. Hoover & Strong Repair Solders are lower karat and easy flowing, because these karats are lower karat they may not color match karat gold as well as plumb solders. Metal - Sterling Silver Solder Type - Silver Wire Solder Recommended Use - Sizing Melting Point - 1265 Flow Point - 1295 Approximate Weight - 31.1 grams