For general purpose use with appropriate type flux such as Forney Industries ITEM#'s 38120, Ruby Fluid and 38125, Paste Flux. Not suitable for aluminum. Not for sale in Pennsylvania. Product Features:Size: 1/8Weight: 0.25 lb. (.113 kilograms (kg))Grade: 50/50 Tin/LeadTensile strength: 5,500 pounds of force per square inch (PSI)Melting temperature: 421 Farhenheit (216 Celsius)Not suitable for aluminum. Not for sale in Pennsylvania.