Kester 44 Rosin Core Solder 63/37 .031" Dispense-PakLegendary Kester Solder in a convenient Dispense-Pak Saves You Money!Kester 44 Rosin Flux is an activated rosin formula for use in flux-cored solder wire. Kester 44 Rosin Flux has virtually dominated the field of activated rosin core solders for well over four decades. An outstanding performance feature of this flux is the "instant-action" wetting behavior. The high mobility and fast-spreading action of this flux results in more reliable production line soldering.Features:1-ounce Dispense Pack contains approx 25 feet of solder!Labeled with Product and Date of Manufacture67/37 Tin/Lead is most common for electronics work.031" Diameter is most common for electronics workHigh activity RA formulationExcellent solderability to a wide variety of metallizationsIndustry standard for decadesStandard Core 66 (3.3% flux) Solder iron tip temperatures between 315-371°C (600-700°F)Flux residue is non-corrosive and non-conductiveFactory fresh, NOT SURPLUS. Shelf life 2 years from DOMA few warnings and cautions:For industrial use onlyWe can not offer advice on a specific application. For use by experienced electronics techniciansUser assumes all risk for application.Any warrantees are limited to replacement or refund of product.Always wear safety glasses when working with soldering equipment and materialsAlways use adequate venilation when working with soldering equipment and materialsAvoid breathing flux fumes emitted during soldering.Flux fumes may cause pulmonary irritation or damage.This product may contain chemicals known to the state of California to cause cancer and/or other reproductive harm.NOTE: This item currently only ships within the United States. We can not ship this item internationally.