Durst, B13594, 1.7 OZ, Soldering Paste, Lead Free, Cleans, Fluxes And Protects, Specially Formulated To Be Brushable 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.