Hercules, 1/2 LB, Climate Smooth Soldering Paste, Lead Free, Non-Acid Soldering Flux, Specially Formulated To Be Brush able At Extreme Temperatures All Year Long In Virtually All Climates, Solders Spread Faster & More Uniformly In The Joint When Used With Climate Smooth, Works With All Solders, Including Higher Melting, Non-Lead Bearing Alloys, Plus 95/5, 50/50, 40/60, & 60/40 Solders, Screw Cap With Brush. The product is manufactured in China. Easy installation and easy handling.