Oatey No. 95 Lead Free Tinning Flux cleans, tins and fluxes most commonly soldered metals including copper, brass, zinc, galvanized iron, lead and tin or copper-coated metals. No. 95 contains lead free solder powder which helps draw in the solder wire. Fluxing is a critical step in the soldering process. No. 95 Tinning Flux provides superior wetting properties for better solder flow and can be used with most soft solders. No. 95 Tinning Flux complies with CA & VT lead content regulations.