The 14-216 from Utility Wonder is a Soldering Flux Paste w/ Brush Cap, Utility, 1/2 lb. It's America's #1 brand of flux since 1926, designed for copper sweat fitting work and also suitable for brass, tin, stainless steel, lead, cast iron and wrought iron (except aluminum). It removes oxidation from metal surface and requires no prep work. Recommended for all soft solder work, including 95/5.

Features:

• 1/2 lb Tube;
• Includes brush;
• •Lead-Free (suitable for potable water lines);
• Solder-Free;
• Self-cleaning (requires no surface preparation);
• Works for all pipe sizes - large and small;
• Made in the USA;
• Won't burn, char or spatter;
• The most demanded flux since 1926;
• Meets Fed Spec. O-F-506 and GSA A-A-51145C