The Kester 245 lead solder wire is another quality product from Kester. Melting point is reached at a temperature of +363 F. It's manufactured as an activated rosin flux core. Total composition for this lead solder wire is sn63/pb37. Additional, and potentially important, information was collected about this product: Flux Size: 50 Sale Unit: POUND Brand: Kester Series: 245 Core Type: Activated Rosin Flux Core Wire Diameter: 0.04 in Material lead Item Weight 1 pounds Part Number 24-6337-8813 Manufacturer Kester Item model number 24-6337-8813 Batteries Included No Batteries Required No Package Dimensions 2.52 x 2.48 x 2.24 inches Item Package Quantity 1 Is Discontinued By Manufacturer No